Basin Characteristic Definitions

The values in the "StatLabel", "StatisticLabel", and "Definition" fields in the table below appear in the outputs for user-selected sites in columns with headings of "Parameter Code", "Parameter Name", and "Parameter Description", respectively. In reports for USGS streamgages, the "StatisticLabel" values below appear in the "Characteristic Name" column of the Physical Characteristics tables.

StatLabel	Statistic Label	Definition	English	Metric
ABEL8K	74	Drainage Area below 8000ft	square miles	km2
ABURN	2863	Total area burned within delineated basin	square miles	km2
ACARBON	40	Area underlain by carbonate rock	square miles	km2
ACHSWAMP	53	Main Channel Swamp	square miles	km2
ACLAY	49	Area underlain by lacustrine clay and silt	square miles	km2
ACRSDFT	41	Area underlain by stratified drift	square miles	km2
ACRSTILL	42	Area underlain by coarse-textured glacial till	square miles	km2
ACTIVE	1217	Station is currently active	Yes or No	Yes or No
ADETEN	50	Lake and Detention Basin Area	square miles	km2
ADEVNLCD01	4383	Total area of land-use classifications 21-24 from NLCD 2001	square miles	km2
ADJCOEFF	2320	Coefficient to adjust estimates for percentage of carbonate rock in Western Maryland	dimensionless	dimensionless
AFINMOR	43	Area underlain by end moraines of fine-textured till	square miles	km2
AFOREST	44	Area covered by forest	square miles	km2
AG_OF_DA	1797	Agricultural Land in Percentage of Drainage Area (Idaho Logistic Regression Equations SIR 2006-5035)	percent	percent
AGENCY_CD	173	USGS NWIS Agency code for Station	dimensionless	dimensionless
AGLACIER	45	Area covered by glaciers	square miles	km2
AGMD97	2240	Percent area of agricultural land use from Maryland Dept of Planning 1997 land-use data	percent	percent
AIMPERV	48	Impervious area	square miles	km2
AISOLAKE	2920	Area of basin that is isolated lakes and ponds that are not connected to the stream network, from 1:24,000 scale DRG data	square miles	km2
AISOLAKEDA	2921	Area that drains to and includes isolated lakes and ponds from 1:24K DRGs	square miles	km2
AL_SVI2020	4706	Mapped streamflow variability index as defined in SIR 2020-5099	dimensionless	dimensionless
ALAKE	51	Area of Lakes and Ponds	square miles	km2
ALIME	52	Area underlain by limestone geology	square miles	km2
ALPA10BARE	4504	Percent bare ground from ALOS-PALSAR 2010, class 2	percent	percent
ALPA10FLWD	4511	Percent flat woodland from ALOS-PALSAR 2010, class 9	percent	percent
ALPA10FRST	4507	Percent forests from ALOS-PALSAR 2010, class 5	percent	percent
ALPA10FRWT	4509	Percent forested wetland from ALOS-PALSAR 2010, class 7	percent	percent
ALPA10HERB	4505	Percent herbaceous from ALOS-PALSAR 2010, class 3	percent	percent
ALPA10MTWD	4503	Percent mountain woodland from ALOS-PALSAR 2010, class 1	percent	percent
ALPA10SHSC	4506	Percent shrub or scrub from ALOS-PALSAR 2010, class 4	percent	percent
ALPA10URBN	4508	Percent Urban from ALOS-PALSAR 2010, class 6	percent	percent
ALPA10WATR	4510	Percent water from ALOS-PALSAR 2010, class 8	percent	percent
ALTIND	1179	Altitude Index	thousand feet	kilometer
ALVM	3727	Percentage of the basin covered by Quaternary alluvial deposits from Reed & Bush (2005)	percent	percent
AMEDTILL	134	Area underlain by medium-textured glacial till	square miles	km2
AMUCK	55	Area underlain by peat and muck	square miles	km2
AOS	1439	Average Maximum Overland Slope	percent	percent
AOUTWASH	54	Area underlain by outwash	square miles	km2
APRAVPRE	99	Mean April Precipitation	inches	mm
APRAVTMP	100	Mean April Temperature	degrees F	degrees C
ARBEL8K	39	Drainage Area below 8000ft	square miles	km2
ASANDGRAV	2672	Area of land surface underlain by sand and gravel deposits	square miles	km2
ASOILA	46	Area underlain by hydrologic soil type A	square miles	km2
ASOILD	47	Area underlain by hydrologic soil type D	square miles	km2
ASPECT	2913	Basin average of topographic slope compass directions from elevation grid	degrees C	degrees
ASTORAGE	56	Area of Storage (lakes - ponds - and wetlands )	square miles	km2
ATILL	2673	Surface area covered by till deposits	square miles	km2
ATILROCK	57	Area underlain by thin glacial till over bedrock	square miles	km2
AUGAVPRE	101	Mean August Precipitation	inches	mm
AUGAVTMP	102	Mean August Temperature	degrees F	degrees C
AURBAN	58	Area covered by urban land use	square miles	km2
AVMXSS	1185	Average Maximum Soil Slope	percent	percent
AWETLAND	59	Area of Wetlands	square miles	km2
AWETSG	2675	Area of lakes and wetlands underlain by sand and gravel deposits	square miles	km2
AZ_HIPERMA	2316	Percent basin surface area containing high permeability aquifer units as defined for Arizona in SIR 2014-5211	percent	percent
AZ_HIPERMG	2317	Percent basin surface area containing high permeability geologic units as defined for Arizona in SIR 2014-5211	percent	percent
AZIMUTH	64	Decimal degrees from north of a straight line connecting the points 10- and 85-percent of distance along main stream channel	decimal degrees	decimal degrees
BASELNDPTH	1850	Depth of the 50-percent flow duration in feet above the zero-flow point.	feet	m
BASIN	10	Local code of major drainage basin in which the station is located	dimensionless	dimensionless
BASINPERIM	1778	Perimeter of the drainage basin as defined in SIR 2004-5262	miles	km
BASLENAH	1361	Basin length from outlet to basin divide determined using the method in the ArcHydro Toolset	miles	km
BASLENRAW	2842	Basin length computed by ArcHydro method, unadjusted for bias	miles	km
BASSTRMORD	1762	Strahler stream order of the main channel at the basin outlet	dimensionless	dimensionless
BASWIDTH	2360	Effective basin width computed as drainage area (DRNAREA) divided by basin length (BASLENAH)	miles	km
BDF	66	Urbanization index described by Sauer and others (1981) - Also called Urbanization Index in Texas	dimensionless	dimensionless
BEGIN_REC	1208	First day of record	days	days
BFI_WOLOCK	4580	Baseflow index in percent by Wolock (2003), https://water.usgs.gov/GIS/dsdl/bfi48grd.zip	percent	percent
BFREG	2511	Bankfull-flow region code	dimensionless	dimensionless
BRMETA	2448	Percent area of metamorphic rocks within the Blue Ridge Physiographic Region	percent	percent
BRNAREA	4695	Area within a watershed that has undergone a wildfire event	square miles	km2
BSHAPE	106	Basin Shape Factor for Area	dimensionless	dimensionless
BSHAPELFP	3725	Basin Shape Factor computed as the square of the longest flow path divided by drainage area	dimensionless	dimensionless
BSLDEM10ff	1399	Mean basin slope computed from 10 m DEM in feet per foot	feet per foot	m per m
BSLDEM10M	1201	Mean basin slope computed from 10 m DEM	percent	percent
BSLDEM250	1199	Mean basin slope computed from 1:250K DEM	percent	percent
BSLDEM30ff	2384	Mean basin slope computed from 30 m DEM in feet per foot	feet per foot	m per m
BSLDEM30FT	2864	Mean basin slope, based on slope percent grid from DEM with 30 foot pixels	percent	percent
BSLDEM30M	1200	Mean basin slope computed from 30 m DEM	percent	percent
BSLDEM3M	4729	Mean basin slope computed from 3 meter digital elevation model, in percent	percent	percent
BSLOPCM	105	Mean basin slope determined by summing lengths of all contours in basin mulitplying by contour interval and dividing product by drainage area	feet per mi	m per km
BSLOPD	1222	Mean basin slope measured in degrees	degrees C	degrees
BSLOPDRAW	2867	Mean basin slope, in degrees, raw value unadjusted for bias	degrees C	degrees
BSLOPGM	104	Mean basin slope determined using the grid-sampling method	feet per foot	m per m
BSLPDRPA20	4582	Unadjusted basin slope for use in PA2020, in degrees	degrees C	degrees
BURBNHI	2861	Percent of basin burned at high severity	percent	percent
BURNMOD	2860	Percent of basin burned at moderate severity	percent	percent
BURNSLP30	2862	Percent of the entire basin area with slopes GE30 percent and burned at high, mod and low severity	percent	percent
CANOPY_PCT	1865	Percentage of drainage area covered by canopy comprised of classes 41-43 from 2001 National Land Cover Dataset	percent	percent
CARBADJUST	1286	Binary variable for Western Maryland low-flow equations equals 1 if CARBON greater than 40 percent and zero otherwise	dimensionless	dimensionless
CARBON	137	Percentage of area of carbonate rock	percent	percent
CAT1ROADS	4708	Length of interstates lmtd access highways and ramps for lmtd access highways, includes cloverleaf interchanges (USGS Ntl Transp Dataset)	miles	km
CAT2ROADS	4709	Length of sec hwy or maj connecting roads; main arteries & hwys not lmtd access, usually in the US Hwy or State Hwy systems (USGS Ntl Transp Dataset)	miles	km
CAT3ROADS	4710	Length of local connecting roads; roads that collect traffic from local roads & connect towns, subdivisions & neighborhoods (USGS Nat Transp Dataset)	miles	km
CAT4ROADS	4711	Length of local roads; generally paved street, road, or byway that usually have single lane of traffic in each direction (USGS Ntnl Transp Dataset)	miles	km
CB01BARE	2471	Percent barren from 2001 Chesapeake Bay land cover dataset	percent	percent
CB01CRPHAY	2467	Percent cultivated crops and hay from 2001 Chesapeake Bay land cover dataset	percent	percent
CB01DEV	2465	Percent developed from 2001 Chesapeake Bay land cover dataset	percent	percent
CB01FORSHB	2466	Percent forests and shrub lands from 2001 Chesapeake Bay land cover dataset	percent	percent
CB01HERB	2468	Percent herbaceous from 2001 Chesapeake Bay land cover dataset	percent	percent
CB01WATER	2469	Percent open water from 2001 Chesapeake Bay land cover dataset	percent	percent
CB01WETLND	2470	Percent wetlands 2001 Chesapeake Bay land cover dataset	percent	percent
CB06BARE	2478	Percent barren from 2006 Chesapeake Bay land cover dataset	percent	percent
CB06CRPHAY	2474	Percent cultivated crops and hay from 2006 Chesapeake Bay land cover dataset	percent	percent
CB06DEV	2472	Percent developed 2006 Chesapeake Bay land cover dataset	percent	percent
CB06FORSHB	2473	Percent forests and shrub lands from 2006 Chesapeake Bay land cover dataset	percent	percent
CB06HERB	2475	Percent herbaceous from 2006 Chesapeake Bay land cover dataset	percent	percent
CB06WATER	2476	Percent water from 2006 Chesapeake Bay land cover dataset	percent	percent
CB06WETLND	2477	Percent wetlands from 2006 Chesapeake Bay land cover dataset	percent	percent
CCM	1757	Constant of channel maintenance computed as drainage area divided by total stream length	square mile per mile	km2 per km
CELVBLUE	62	Average of outlet elevation and the elevation at the upstream extent of the mapped stream	feet	m
CELVMEAN	131	Mean elevation along the main channel	feet	m
CENTROIDX	2166	Basin centroid horizontal (x) location in state plane coordinates	State plane coordinates	State plane coordinates
CENTROIDY	2167	Basin centroid vertical (y) location in state plane units	State plane coordinates	State plane coordinates
CENTROXA83	2502	Basin centroid horizontal (x) location in NAD 1983 Albers	NAD 1983 Albers	NAD 1983 Albers
CENTROXRI	2367	Basin centroid horizontal (x) location in Rhode Island state plane coordinates	State plane coordinates	State plane coordinates
CENTROYA83	2503	Basin centroid horizontal (y) location in NAD 1983 Albers	NAD 1983 Albers	NAD 1983 Albers
CENTROYRI	2368	Basin centroid vertical (y) location in Rhode Island state plane coordinates	State plane coordinates	State plane coordinates
CENTRXA83M	2916	Basin centroid horizontal (x) location in NAD 1983 Albers	NAD 1983 Albers meters	NAD 1983 Albers meters
CENTRXUTM	4304	Basin centroid horizontal (x) location in UTM meters	UTM meters	UTM meters
CENTRYA83M	2917	Basin centroid horizontal (y) location in NAD 1983 Albers	NAD 1983 Albers meters	NAD 1983 Albers meters
CENTRYUTM	4305	Basin centroid horizontal (x) location in UTM meters	UTM meters	UTM meters
CF	68	Climate factor for area	dimensionless	dimensionless
CH92_01DEV	2315	Percent Difference between 1992 and 2001 area covered by developed land using NLCD	percent	percent
CH92_01FOR	2314	Percent Difference between 1992 and 2001 area covered by forest using NLCD	percent	percent
CHANCOND	61	Condition between points 100- 75- 50- and 25-percent along main channel - 2 if entirely paved - 1 if unpaved	dimensionless	dimensionless
CHANWD_RS	4730	Channel width determined from remotely sensed data sources, including aerial imagery	feet	m
CHSWAMP	151	Percentage of area of main channel swamps	percent	percent
CIRC_RATIO	1428	Circularity Ratio	dimensionless	dimensionless
CLENBLUE	88	Length of main channel shown as blue line on a topographic map	miles	km
CLIFAC100Y	2912	100-year climate factor from Litchy and Karlinger (1990)	dimensionless	dimensionless
CLIFAC25Y	2911	25-year climate factor from Litchy and Karlinger (1990)	dimensionless	dimensionless
CLIMFAC2YR	2066	Two-year climate factor from Litchy and Karlinger (1990)	dimensionless	dimensionless
COASTDIST	1292	Shortest distance from the coastline to the basin centroid	miles	km
COMMD97	2241	Percent area of commercial land use from Maryland Dept of Planning 1997 land-use data	percent	percent
COMPRAT	69	A measure of basin shape related to basin perimeter and drainage area	dimensionless	dimensionless
CONIF	1304	Percentaqe of land surface covered by coniferous forest	percent	percent
CONLENLDR	4461	Total length of all lidar-based elevation contours within the drainage area	feet	m
CONTDA	70	Area that contributes flow to a point on a stream (total drainage area minus non-contributing areas within basin)	square miles	km2
CONTOUR	2900	Total length of all elevation contours in drainage area from 1:24K mapping	miles	km
CONTROL	140	Percent of basin controlled by lakes swamps and reservoirs	percent	percent
CONTROLLED	1578	Percent of basin controlled by lakes swamps and reservoirs - see WRIR 00 4189	percent	percent
CONVEY	65	Conveyance of main stream channel at bank-full conditions	cubic feet per second	m3 per second
COUNTY	11	County code	dimensionless	dimensionless
CPSED	2449	Percent area of sedimentary rockswithin the Coastal Plain Physiographic Region	percent	percent
CROPS	2642	Percent of basin area covered by agricultural land	percent	percent
CROSCOUNT1	4712	Number of intersections between streams and roads, where the roads are interstate, limited access highway, or ramp (CAT1ROADS)	dimensionless	dimensionless
CROSCOUNT2	4713	Number of intersections between streams and roads, where the roads are secondary highway or major connecting road (CAT2ROADS)	dimensionless	dimensionless
CROSCOUNT3	4714	Number of intersections between streams and roads, where roads are local conecting roads (CAT3ROADS)	dimensionless	dimensionless
CROSCOUNT4	4715	Number of intersections between streams and roads, where roads are local roads (CAT4ROADS)	dimensionless	dimensionless
CRSDFT	138	Percentage of area of coarse-grained stratified drift	percent	percent
CRSTILL	139	Percentage of area of coarse till	percent	percent
CSL10_85	166	Change in elevation divided by length between points 10 and 85 percent of distance along main channel to basin divide - main channel method not known	feet per mi	m per km
CSL10_85fm	1358	Change in elevation between points 10 and 85 percent of length along main channel to basin divide divided by length between points ft per mi	feet per mi	m per km
CSL100	4275	Main channel slope determined from elevations along 100 percent of the longest flow path extended to the basin divide	feet per mi	m per km
CSL1085LFP	1574	Change in elevation divided by length between points 10 and 85 percent of distance along the longest flow path to the basin divide, LFP from 2D grid	feet per mi	m per km
CSL1085LO	2093	Change in elevation between points 10 and 85 percent of length along the lower half of the longest flow path divided by length between the points	feet per mi	m per km
CSL1085RAW	2841	Main channel slope computed by the 10 and 85 method, unadjusted for bias	feet per mi	m per km
CSL1085UP	2094	Change in elevation between points 10 and 85 percent of length along the upper half of the longest flow path divided by length between the points	feet per mi	m per km
CSLArc10	1224	Average stream slope determined using ArcHydro Tools and 10 meter DEM - computes average of slopes from all elevation grid cells along the blue line	feet per mi	m per km
CSLBlue	167	Change in elevation of the longest blue-line stream (not extended to the boundary) divided by stream length	feet per mi	m per km
CSLBlue_ff	2078	Change in elevation of the longest blue-line stream divided by stream length	feet per foot	m per m
CSLD10FFPM	4460	Change in elev divided by length between points 10 and 85 percent of the longest flow path to basin divide, from Lidar dem with 10 foot cell size	feet per mi	m per km
DA1000	1268	Drainage area divided by 1000	square miles	km2
DACTCH	2946	Average depth of the active channel of a stream	feet	m
DAMREG	2948	Percent of contributing drainage area that is regulated by upstream dams	percent	percent
DATUM	22	Datum used to determine the site coordinates	dimensionless	dimensionless
DAUNREG	1346	Unregulated drainage area used in OK regulated equations	square miles	km2
DBANKF_D_B	4717	Bankfull depth for Physiographic Division, from Bieger et al. 2015	feet	m
DBANKF_P_B	4720	Bankfull depth for Physiographic Province, from Bieger et al. 2015	feet	m
DBANKF_U_B	4723	Bankfull depth for USA, from Bieger et al. 2015	feet	m
DBANKFULL	2947	Average depth of a stream at bankfull level	feet	m
DECAVPRE	129	Mean December Precipitation	inches	mm
DECAVTMP	130	Mean December Temperature	degrees F	degrees C
DESMOIN	72	Area underlain by Des Moines Lobe	percent	percent
DETEN	148	Percentage of area of lakes and detention basins	percent	percent
DEVNLCD01	1228	Percentage of land-use categories 21-24 from NLCD 2001	percent	percent
DEVNLCD92	2605	Percentage of developed land-use categories 21-24 from NLCD 1992	percent	percent
DINTNLCD01	1229	Impervious percentage computed as ((.10A21+.25A22+.65A23+.90A24)/DA)*100 from NLCD 2001	percent	percent
DIRECT	13	Directions	dimensionless	dimensionless
DISTANCE	0	Distance from Ungaged Station	miles	km
DISTRICT	24	Code of the state where the station is located.	dimensionless	dimensionless
DMARMAXTMP	136	Normal Daily Maximum March Temperature	degrees F	degrees C
DRAININD	2943	Drainage index from STATSGO soil properties computed as in SIR 2014-5177	dimensionless	dimensionless
DRFTPERSTR	165	Area of stratified drift per unit of stream length	square mile per mile	km2 per km
DRN	2165	Drainage quality (1=well drained to 7=poorly drained) from dataset at http://water.usgs.gov/GIS/metadata/usgswrd/XML/ussoils.xml	dimensionless	dimensionless
DRN_CLS_S	4565	Dominant drainage class from SSURGO https://doi.org/10.3133/ds866	dimensionless	dimensionless
DRNAREA	73	Area that drains to a point on a stream	square miles	km2
DRNDENSITY	1804	Basin drainage density defined as total stream length divided by drainage area.	miles per square mile	km per km2
DRNFREQ	75	Number of first order streams per square mile of drainage area	1st-order streams per square mile	1st-order streams per km2
DURREG	17	Flow-Duration Hydrologic Region code	dimensionless	dimensionless
DV_OF_DA	1796	Developed Land in Percentage of Drainage Area (Idaho Logistic Regression Equations SIR 2006-5035)	percent	percent
DWT_Min_S	4563	Minimum depth to water table, from SSURGO https://doi.org/10.3133/ds866	inches	centimeters
EFFECTDA	76	Total drainage area minus area upstream from erosion-control and flood-retention structures	square miles	km2
EFFPREC	4560	Effective precipitation, as computed by the difference between statlabels PRCgrdMET and ET_SSEBop	inches	mm
EL1200	1184	Percentage of basin at or above 1200 ft elevation	percent	percent
EL2000	2247	Percent of basin area that is above 2000 feet elevation	percent	percent
EL5000	78	Percent of area above 5000 ft	percent	percent
EL5500	3282	Percent of area above 5500 ft	feet	m
EL6000	79	Percent of area above 6000 ft	percent	percent
EL6500	3283	Percent of area above 6500 ft	feet	m
EL7000	2309	Percent of area above 7000 ft	feet	m
EL7500	1350	Percent of area above 7500 ft	percent	percent
ELEV	103	Mean Basin Elevation	feet	m
ELEV1000	1188	Elevation in Thousands	thousand feet	kilometer
ELEV10FT	1900	Elevation at 10 percent from outlet along longest flow path slope using DEM	feet	m
ELEV10FT3D	1901	Elevation at 10 percent from outlet along longest flow path slope using 3D line	feet	m
ELEV85FT	1902	Elevation at 85 percent from outlet along longest flow path slope using DEM	feet	m
ELEV85FT3D	1903	Elevation at 85 percent from outlet along longest flow path slope using 3D line	feet	m
ELEVMAX	93	Maximum basin elevation	feet	m
ELONGRATIO	1751	Elongation Ratio	dimensionless	dimensionless
ELV10_85	77	Average of channel elevations at points 10- and 85- percent above gage - Equivalent to Altitude Index	feet	m
END_REC	1209	Last day of record	days	days
ET_SSEBop	4559	Evapotranspiration from the Simplified Surface Energy Balance Model https://code.earthengine.google.com/993ab7b9fa4664b6d29940d4b2e065a9	inches	mm
ET0306MOD	2590	Spring (March-June) mean monthly evapotranspiration (2001-2011), MODIS	inches	mm
ET0710MOD	2591	Summer (July-October) mean monthly evapotranspiration (2001-2011), MODIS	inches	mm
ETPENMON	4500	Mean annual reference evapotranspiration from Penman Montieth method	inches	mm
EVAP	94	Mean Annual Lake Evaporation	inches	mm
EVAPAN	95	Mean Annual Pan Evaporation	inches	mm
FARM_SUR	4566	Farmable land from SSURGO, in percent https://doi.org/10.3133/ds866	percent	percent
FEBAVPRE	110	Mean February Precipitation	inches	mm
FEBAVTMP	111	Mean February Temperature	degrees F	degrees C
FINMOR	141	Percentage of area of end moraine fine till	percent	percent
FIRSTYEAR	1359	Year in which record was first collected or used for analysis	years	years
FLC11DVLMH	2922	Fraction of drainage area that is in low to high developed land-use classes 22-24 from NLCD 2011	decimal fraction	decimal fraction
FOREST	142	Percentage of area covered by forest	percent	percent
FOREST_MD	2229	Percent forest from Maryland 2010 land-use data	percent	percent
FORESTp1	1189	Percent Forest plus 1 (ID ROI Parm)	percent	percent
FORMD97	2243	Percent area of forest from Maryland Dept of Planning 1997 land-use data	percent	percent
FORWET	2644	Percentage of land covered by forested wetlands - source not specified	percent	percent
FOSTREAM	1761	Number of first order streams determined using the Strahler stream ordering system	dimensionless	dimensionless
FROST	112	Mean frost depth on February 28	inches	mm
FSSURGDC78	2925	Fraction of land area that is in very poorly drained and unknown likely water drainage classes 7 and 8 from SSURGO	decimal fraction	decimal fraction
GA_PKREG1	2480	Georgia Peak Flow Region 1 from SIR 2009-5043	dimensionless	dimensionless
GA_PKREG2	2481	Georgia Peak Flow Region 2 from SIR 2009-5043	dimensionless	dimensionless
GA_PKREG3	2482	Georgia Peak Flow Region 3 from SIR 2009-5043	dimensionless	dimensionless
GA_PKREG4	2483	Georgia Peak Flow Region 4 from SIR 2009-5043	dimensionless	dimensionless
GA_PKREG5	2484	Georgia Peak Flow Region 5 from SIR 2009-5043	dimensionless	dimensionless
GENRO	80	Generalized mean annual runoff in Minnesota 1951-85	inches	mm
GEOFACTVT	1400	Northing of the centroid of the drainage basin in the Vermont State Plane coordinate system divided by 100000 then increased by 1	dimensionless	dimensionless
GEOFACTWY	81	Geographic factor for Wyoming from plate 1 of Lohman (1988)	dimensionless	dimensionless
GLACIATED	1573	Percentage of basin area that was historically covered by glaciers	percent	percent
GLACIER	143	Percentage of area of Glaciers	percent	percent
GRUN	2877	Mean annual groundwater runoff	inches	mm
GRUN01	4139	Mean January groundwater runoff	inches	mm
GRUN02	4140	Mean February groundwater runoff	inches	mm
GRUN03	4141	Mean March groundwater runoff	inches	mm
GRUN04	4142	Mean April groundwater runoff	inches	mm
GRUN05	4143	Mean May groundwater runoff	inches	mm
GRUN06	4144	Mean June groundwater runoff	inches	mm
GRUN0611	4167	Mean annual dry season groundwater runoff, June through November	inches	mm
GRUN07	4145	Mean July groundwater runoff	inches	mm
GRUN0711	2878	Mean annual dry season groundwater runoff, July through November	inches	mm
GRUN08	4146	Mean August groundwater runoff	inches	mm
GRUN09	4147	Mean September groundwater runoff	inches	mm
GRUN10	4148	Mean October groundwater runoff	inches	mm
GRUN11	4149	Mean November groundwater runoff	inches	mm
GRUN12	4150	Mean December groundwater runoff	inches	mm
GRUN1205	4164	Mean annual wet season groundwater runoff, December through May	inches	mm
GRUN1206	2879	Mean annual wet season groundwater runoff, December through June	inches	mm
GRUNMS	4170	Mean annual froundwater runoff computed from monthly sums	inches	mm
GUTTER	83	Length of gutters per square mile of drainage area	miles per square mile	km per km2
GWHEAD	82	Mean - minimum basin elevation	feet	m
HCDN2009	175	Station is part of the 2009 Hydro-Climatic Data Network (http://water.usgs.gov/GIS/metadata/usgswrd/XML/gagesII_Sept2011.xml) when 'Yes', else ‘No'	Yes or No	Yes or No
HIELONGRAT	1793	Ratio of (1)diameter of circle with equal area as basin to (2)basin length, as defined in SIR 2004-5262	dimensionless	dimensionless
HIGHEQU	19	Indicates whether the site was used to develop high-flow regression equations	Yes or No	Yes or No
HIGHREG	15	High-Flow Hydrologic Region code	dimensionless	dimensionless
HIMARRATE	1794	Mean annual rainfall rate determined based on the method described in SIR 2004-5262	cubic feet per second	m3 per second
HIRAINRATE	1750	Maximum Weighted Rainfall Rate	cubic feet per second	m3 per second
HLI_ERGo	4557	Heat load index from the Ecologically Relevant Geomorphology dataset https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0143619	dimensionless	dimensionless
HOMDEN2000	1355	Housing density from 2000 census data	homes per acre	homes per km2
HOMDENCYR	1354	Housing density for centroid year of streamflow data collection	homes per acre	homes per km2
HOMEDENS	1348	Average homes per acre in watershed	homes per acre	homes per km2
HSNGTOT10	4728	Housing density from the 2010 census	homes per acre	homes per km2
HUC	9	Hydrologic Unit Number	dimensionless	dimensionless
HYDFUNCONN	4698	Hydraulic Functional Connectivity as defined in SIR 2011-5236	dimensionless	dimensionless
HYDRIC	4569	Percent hydric soils	percent	percent
HYPSO	2238	Single-valued index equal to the ratio of the area under the normalized hypsometric curve	dimensionless	dimensionless
I_30_M	4696	Maximum 30 minute rainfall intensity as defined in SIR 2011-5236	inches per hour	mm per hr
I_30_M_THR	4705	Threshold at which the maximum 30 minute rainfall intensity begins to produce runoff, as defined in SIR 2011-5236	inches per hour	mm per hr
I24H100Y	33	Maximum 24-hour precipitation that occurs on average once in 100 years	inches	mm
I24H100YA2	4425	Maximum 24-hour precipitation that occurs on average once in 100 years from NOAA Atlas 2	inches	mm
I24H10Y	30	Maximum 24-hour precipitation that occurs on average once in 10 years	inches	mm
I24H1Y	4499	Maximum 24-hour precipitation that occurs on average once each year	inches	mm
I24H200Y	2898	Maximum 24-hour precipitation that occurs on average once in 200 years	inches	mm
I24H25Y	31	Maximum 24-hour precipitation that occurs on average once in 25 years	inches	mm
I24H2Y	29	Maximum 24-hour precipitation that occurs on average once in 2 years	inches	mm
I24H500Y	1931	Maximum 24-hour precipitation that occurs on average once in 500 years	inches	mm
I24H50Y	32	Maximum 24-hour precipitation that occurs on average once in 50 years	inches	mm
I24H5Y	1930	Maximum 24-hour precipitation that occurs on average once in 5 years	inches	mm
I24MAX	28	Maximum 24-hour precipitation for period of record	inches	mm
I2H2Y	35	Maximum 2-hour precipitation that occurs on average once in 2 years	inches	mm
I48H100Y	1935	Maximum 48-hour precipitation that occurs on average once in 100 years	inches	mm
I48H10Y	1932	Maximum 48-hour precipitation that occurs on average once in 10 years	inches	mm
I48H25Y	1933	Maximum 48-hour precipitation that occurs on average once in 25 years	inches	mm
I48H2Y	1885	Maximum 48-hour precipitation that occurs on average once in 2 years	inches	mm
I48H500Y	1936	Maximum 48-hour precipitation that occurs on average once in 500 years	inches	mm
I48H50Y	1934	Maximum 48-hour precipitation that occurs on average once in 50 years	inches	mm
I48H5Y	1886	Maximum 48-hour precipitation that occurs on average once in 5 years	inches	mm
I60M100Y	1922	Maximum 60-min precipitation that occurs on average once in 100 years	inches	mm
I60M10Y	1919	Maximum 60-min precipitation that occurs on average once in 10 years	inches	mm
I60M25Y	1920	Maximum 60-min precipitation that occurs on average once in 25 years	inches	mm
I60M2Y	1917	Maximum 60-min precipitation that occurs on average once in 2 years	inches	mm
I60M500Y	1923	Maximum 60-min precipitation that occurs on average once in 500 years	inches	mm
I60M50Y	1921	Maximum 60-min precipitation that occurs on average once in 50 years	inches	mm
I60M5Y	1918	Maximum 60-min precipitation that occurs on average once in 5 years	inches	mm
I6H100Y	1856	6-hour precipitation that is expected to occur on average once in 100 years	inches	mm
I6H10Y	1926	Maximum 6-hour precipitation that occurs on average once in 10 years	inches	mm
I6H25Y	1927	Maximum 6-hour precipitation that occurs on average once in 25 years	inches	mm
I6H2Y	1924	Maximum 6-hour precipitation that occurs on average once in 2 years	inches	mm
I6H500Y	1929	Maximum 6-hour precipitation that occurs on average once in 500 years	inches	mm
I6H50Y	1928	Maximum 6-hour precipitation that occurs on average once in 50 years	inches	mm
I6H5Y	1925	Maximum 6-hour precipitation that occurs on average once in 5 years	inches	mm
ILREG1	1261	Indicator variable for IL region 1, enter 1 if site is in region 1 else 0	dimensionless	dimensionless
ILREG3	1262	Indicator variable for IL region 3, enter 1 if site is in region 3 else 0	dimensionless	dimensionless
ILREG5	1263	Indicator variable for IL region 5, enter 1 if site is in region 5 else 0	dimensionless	dimensionless
ILREG6	1288	Indicator variable for IL region 6, enter 1 if site is in region 6 else 0	dimensionless	dimensionless
ILREG7	1289	Indicator variable for IL region 7, enter 1 if site is in region 7 else 0	dimensionless	dimensionless
IMPERV	146	Percentage of impervious area	percent	percent
IMPERVNOAA	2857	NOAA 1 km Sprawl impervious surfaces grid http://ngdc.noaa.gov/eog/others/download_sprawl.html	percent	percent
IMPMD97	2245	Percent area of impervious surfaces from Maryland Dept of Planning 1997 land-use data	percent	percent
IMPNLCD01	1226	Average percentage of impervious area determined from NLCD 2001 impervious dataset	percent	percent
INSINKHOLE	4299	Percent Sinkhole drainage area per basin from Indiana Geological Survey.	percent	percent
INSINKING	4300	Percent Sinking stream drainage area from Indiana Geological Survey.	percent	percent
IRRIGAT_MT	2904	Percent of basin that is irrigated based on Montana Final Land Unit (FLU) classification	percent	percent
ISOLAKE	2479	Percentage of basin that is isolated lakes and ponds that are not connected to the stream network, from 1:24,000 scale DRG data	percent	percent
ISOLAKEDA	2512	Percent of the drainage area that drains to and includes isolated lakes and ponds from 1:24K DRGs	percent	percent
ISOLAKESUM	4725	Sum of drainage areas of isolated lakes	square miles	km2
JANAVPRE	107	Mean January Precipitation	inches	mm
JANAVPRE2K	4457	Mean January Precipitation from 2k resolution	inches	mm
JANAVTMP	108	Mean January Temperature	degrees F	degrees C
JANMAXPRE	2858	Average maximum January Temperature from 2KM resolution PRISM, 30-year average daily (1961-1990) http://www.climatesource.com/	inches	mm
JANMAXT2K	2895	Mean Maximum January Temperature from 2K resolution PRISM 1961-1990 data	degrees F	degrees C
JANMAXTMP	1259	Mean Maximum January Temperature	degrees F	degrees C
JANMINPRE	2859	Average minimum January Temperature from 2KM resolution PRISM, 30-year average daily (1961-1990) http://www.climatesource.com/	inches	mm
JANMINT2K	2896	Mean Minimum January Temperature from 2K resolution PRISM 1961-1990 data	degrees F	degrees C
JANMINTMP	109	Mean Minimum January Temperature	degrees F	degrees C
JULAVPRE	120	Mean July Precipitation	inches	mm
JULAVPRE2K	4458	Mean July Precipitation from 2k resolution	inches	mm
JULYAVEPRE	1864	Mean July Precipitation	dimensionless	dimensionless
JULYAVTMP	121	Mean July Temperature	degrees F	degrees C
JULYMAXTMP	122	Mean Maximum July Temperature	degrees F	degrees C
JULYMINTMP	1260	Mean Minumum July Temperature	degrees F	degrees C
JUNAVPRE	118	Mean June Precipitation	inches	mm
JUNEAVPRE	1863	Mean June Precipitation	dimensionless	dimensionless
JUNEAVTMP	119	Mean June Temperature	degrees F	degrees C
JUNMAXTMP	2871	Mean Maximum June Temperature	degrees F	degrees C
K1INDNR	4295	Average hydraulic conductivity (ft/d) for the top 70 ft of unconsolidated deposits from InDNR well database.	ft per day	m per day
K2INDNR	4296	Average hydraulic conductivity (ft/d) for the full depth of unconsolidated deposits from InDNR well database.	ft per day	m per day
KARST	4512	Percent of basin with karst terrain	percent	percent
KYVARIND10	2505	Mapped streamflow-variability index as defined in SIR 2010-5217	dimensionless	dimensionless
KYVARIND93	2504	Mapped streamflow variability index as defined in WRIR 92-4173	dimensionless	dimensionless
L3_PIEDMNT	4693	Percent of basin in the EPA Level III Piedmont ecoregion	percent	percent
L3_SE_PLNS	4694	Percent of basin in the EPA Level III Southeast Plains ecoregion	percent	percent
LAGFACTOR	1771	Lag Factor as defined in SIR 2006-5112	dimensionless	dimensionless
LAKEAREA	149	Percentage of Lakes and Ponds	percent	percent
LAKEAREASU	4726	Total area of isolated lakes and ponds	square miles	km2
LAKESNHDH	2905	Percent of basin in lakes, ponds, and reservoirs fom high resolution National Hydrography Dataset	percent	percent
LAKESNWI	2845	Percentage of lakes and ponds as determined from the National Wetlands Inventory (2001)	percent	percent
LAKESp1	1192	Percent Lakes plus 1 (MN ROI Parm)	percent	percent
LASTYEAR	1360	Year in which record was last collected or used for analysis	years	years
LAT_CENT	84	Latitude of Basin Centroid	decimal degrees	decimal degrees
LAT_GAGE	7	Latitude	decimal degrees	decimal degrees
LAT_NHD	1207	Latitude of station location on National Hydrography Dataset	degrees C	degrees
LAT_OUT	1197	Latitude of Basin Outlet	degrees C	degrees
LC01AIMP	1225	Impervious area determined from NLCD 2001 impervious dataset	square miles	km2
LC01BARE	1911	Percentage of area barren land, NLCD 2001 category 31	percent	percent
LC01CANOPY	4289	Percentage of drainage area covered by tree canopy from NLCD 2001	percent	percent
LC01CROP	1913	Percentage of area cultivated crops, NLCD 2001 category 82	percent	percent
LC01CRPHAY	2454	Percentage of cultivated crops and hay, classes 81 and 82, from NLCD 2001	percent	percent
LC01DEV	2856	Percentage of land-use from NLCD 2001 classes 21-24	percent	percent
LC01DEVHI	1910	Percentage of area developed, high intensity, NLCD 2001 category 24	percent	percent
LC01DEVMD	1909	Percentage of area developed, medium intensity, NLCD 2001 category 23	percent	percent
LC01EVERG	1912	Percentage of area evergreen forest, NLCD 2001 category 42	percent	percent
LC01FOREST	2310	Percentage of forest from NLCD 2001 classes 41-43	percent	percent
LC01FORSHB	2455	Percentage of forests and shrub lands, classes 41 to 52, from NLCD 2001	percent	percent
LC01HERB	2311	Percentage of herbaceous upland from NLCD 2001 class 71	percent	percent
LC01IMP	2458	Average percentage of impervious land cover from NLCD 2001	percent	percent
LC01OPNLO	1908	Percentage of area developed, open space and low intensity combined, NLCD2001 cat. 21 and 22	percent	percent
LC01PAST	4502	Percentage of area of pasture area from NLCD 2001 class 81	percent	percent
LC01SHRUB	2868	Percentage of shrub scrub from NLCD 2001 class 52	percent	percent
LC01WATER	2456	Percentage of open water, class 11, from NLCD 2001	percent	percent
LC01WETLND	2457	Percentage of wetlands, classes 90 and 95, from NLCD 2001	percent	percent
LC06ABARE	2290	Area of barren from NLCD 2006 class 31	square miles	km2
LC06ACROP	2304	Area of area of cultivated crops from NLCD 2006 class 82	square miles	km2
LC06ADECID	2291	Area of deciduous forest from NLCD 2006 class 41	square miles	km2
LC06ADEV	2284	Area of developed land-use from NLCD 2006 classes 21-24	square miles	km2
LC06ADEVHI	2288	Area of developed land, high intensity, NLCD 2006 class 24	square miles	km2
LC06ADEVLO	2286	Area of developed land, low intensity, from NLCD 2006 class 22	square miles	km2
LC06ADEVMD	2287	Area of developed land, medium intensity, NLCD 2006 class 23	square miles	km2
LC06ADVOPN	2285	Area of developed open land from NLCD 2006 class 21	square miles	km2
LC06ADWARF	2295	Area of dwarf scrub from NLCD 2006 class 51	square miles	km2
LC06AEMWET	2307	Area of area of emergent herbaceous wetlands from NLCD 2006 class 95	square miles	km2
LC06AEVERG	2292	Area of evergreen forest from NLCD 2006 class 42	square miles	km2
LC06AFORES	2294	Area of forest from NLCD 2006 classes 41-43	square miles	km2
LC06AGRASS	2298	Area of grassland from NLCD 2006 class 71	square miles	km2
LC06AGRI	2366	Percent agriculture computed as total of grass, pasture, and crops, NLCD classes 71, 81 and 82	percent	percent
LC06AHERB	2302	Area of herbaceous from NLCD 2006 classes 71-74	square miles	km2
LC06AIMP	2279	Area of impervious land surface determined from NLCD 2006 impervious dataset	square miles	km2
LC06ALICHN	2300	Area of lichens from NLCD 2006 class 73	square miles	km2
LC06ALTFOR	2364	Percentage of forested land area from NLCD2006 classes 22, 41-43 and 90	percent	percent
LC06AMOSS	2301	Area of moss from NLCD 2006 class 74	square miles	km2
LC06AMXFOR	2293	Area of mixed deciduous and evergreen forest from NLCD 2006 class 43	square miles	km2
LC06AOPNLO	2289	Area of developed land, open space and low intensity combined, NLCD2006 classes 21 and 22	square miles	km2
LC06APAST	2303	Area of area of pasture area from NLCD 2006 class 81	square miles	km2
LC06APLANT	2305	Area of planted area from NLCD 2006 classes 81 and 82	square miles	km2
LC06ASCRUB	2297	Area of scrub from NLCD 2006 classes 51 and 52	square miles	km2
LC06ASEDGE	2299	Area of sedge from NLCD 2006 class 72	square miles	km2
LC06ASHRUB	2296	Area of shrub scrub from NLCD 2006 class 52	square miles	km2
LC06ASNOIC	2283	Area of snow and ice from NLCD 2006 class 12	square miles	km2
LC06ASTOR	2282	Area of water bodies and wetlands determined from the NLCD 2006 classes 11, 90 and 95	square miles	km2
LC06AWATER	2280	Area of water from NLCD 2006 class 11	square miles	km2
LC06AWATWT	2281	Area open water and herbaceous wetland from NLCD 2006 classes 11 and 95	square miles	km2
LC06AWDWET	2306	Area of area of wooded wetlands from NLCD 2006 class 90	square miles	km2
LC06AWETL	2308	Area of wetlands from NLCD 2006 classes 90 and 95	square miles	km2
LC06BARE	2260	Percentage of barren from NLCD 2006 class 31	percent	percent
LC06BARSCB	2365	Percentage of barren and scrub land from NLCD classes 31, 51, and 52	percent	percent
LC06CROP	2274	Percentage of area of cultivated crops from NLCD 2006 class 82	percent	percent
LC06CRPHAY	2459	Percentage of cultivated crops and hay, classes 81 and 82, from NLCD 2006	percent	percent
LC06DECID	2261	Percentage of deciduous forest from NLCD 2006 class 41	percent	percent
LC06DEV	2253	Percentage of land-use from NLCD 2006 classes 21-24	percent	percent
LC06DEVHI	2255	Percentage of area developed, high intensity, NLCD 2006 class 24	percent	percent
LC06DINT	2259	Impervious percentage computed as ((.10A21+.25A22+.65A23+.90A24)/DA)*100 from NLCD 2006	percent	percent
LC06DVLO	2254	Percentage of developed area, low intensity, from NLCD 2006 class 22	percent	percent
LC06DVLOMD	2872	Percentage of developed area, low and medium intensity, from NLCD 2006 classes 22 and 23	percent	percent
LC06DVMD	2256	Percentage of area developed, medium intensity, NLCD 2006 class 23	percent	percent
LC06DVMDHI	2363	Percentage of area developed, medium and high intensity, NLCD 2006 classes 23 and 24	percent	percent
LC06DVOPN	4414	Percent developed, open space (class 21) from 2006 NLCD	percent	percent
LC06DVOPN	2257	Percentage of developed open area from NLCD 2006 class 21	percent	percent
LC06DWARF	2265	Percentage of dwarf scrub from NLCD 2006 class 51	percent	percent
LC06EHWET	4415	Percent emergent herbaceous wetlands (class 95) from 2006 NLCD	percent	percent
LC06EMWET	2277	Percentage of area of emergent herbaceous wetlands from NLCD 2006 class 95	percent	percent
LC06EVERG	2262	Percentage of evergreen forest from NLCD 2006 class 42	percent	percent
LC06FOREST	2264	Percentage of forest from NLCD 2006 classes 41-43	percent	percent
LC06FORSHB	2460	Percentage of forests and shrub lands, classes 41 to 52, from NLCD 2006	percent	percent
LC06GRASS	2268	Percentage of grassland from NLCD 2006 class 71	percent	percent
LC06HERB	2272	Percentage of herbaceous from NLCD 2006 classes 71-74	percent	percent
LC06IMP	2248	Average percentage of impervious area determined from NLCD 2006 impervious dataset	percent	percent
LC06LICHEN	2270	Percentage of lichens from NLCD 2006 class 73	percent	percent
LC06MIXFOR	2263	Percentage of mixed deciduous and evergreen forest from NLCD 2006 class 43	percent	percent
LC06MOSS	2271	Percentage of moss from NLCD 2006 class 74	percent	percent
LC06OPNLO	2258	Percentage of area developed, open space and low intensity combined, NLCD2006 classes 21 and 22	percent	percent
LC06PAST	2273	Percentage of area of pasture area from NLCD 2006 class 81	percent	percent
LC06PLANT	2275	Percentage of planted area from NLCD 2006 classes 81 and 82	percent	percent
LC06SCRUB	2267	Percentage of scrub from NLCD 2006 classes 51 and 52	percent	percent
LC06SEDGE	2269	Percentage of sedge from NLCD 2006 class 72	percent	percent
LC06SHRUB	2266	Percentage of shrub scrub from NLCD 2006 class 52	percent	percent
LC06SNOIC	2252	Percent snow and ice from NLCD 2006 class 12	percent	percent
LC06STOR	2251	Percentage of water bodies and wetlands determined from the NLCD 2006	percent	percent
LC06WATER	2249	Percent of open water, class 11, from NLCD 2006	percent	percent
LC06WATWET	2250	Percent open water and herbaceous wetland from NLCD 2006 classes 11 and 95	percent	percent
LC06WDWET	2276	Percentage of area of wooded wetlands from NLCD 2006 class 90	percent	percent
LC06WETLND	2462	Percentage of wetlands, classes 90 and 95, from NLCD 2006	percent	percent
LC11ABARE	2773	Area of barren from NLCD 2011 class 31	square miles	km2
LC11ACROP	2774	Area of area of cultivated crops from NLCD 2011 class 82	square miles	km2
LC11ADECID	2775	Area of deciduous forest from NLCD 2011 class 41	square miles	km2
LC11ADEV	2776	Area of developed land-use from NLCD 2011 classes 21-24	square miles	km2
LC11ADEVHI	2777	Area of developed land, high intensity, NLCD 2011 class 24	square miles	km2
LC11ADEVLO	2778	Area of developed land, low intensity, from NLCD 2011 class 22	square miles	km2
LC11ADEVMD	2779	Area of developed land, medium intensity, NLCD 2011 class 23	square miles	km2
LC11ADVOPN	2780	Area of developed open land from NLCD 2011 class 21	square miles	km2
LC11ADWARF	2781	Area of dwarf scrub from NLCD 2011 class 51	square miles	km2
LC11AEMWET	2782	Area of emergent herbaceous wetlands from NLCD 2011 class 95	square miles	km2
LC11AEVERG	2783	Area of evergreen forest from NLCD 2011 class 42	square miles	km2
LC11AFORES	2784	Area of forest from NLCD 2011 classes 41-43	square miles	km2
LC11AGRASS	2785	Area of grassland from NLCD 2011 class 71	square miles	km2
LC11AGRI	2786	Percent agriculture computed as total of grass, pasture, and crops, NLCD classes 71, 81 and 82	percent	percent
LC11AHERB	2787	Area of herbaceous from NLCD 2011 classes 71-74	square miles	km2
LC11AIMP	2788	Area of impervious land surface determined from NLCD 2011 impervious dataset	square miles	km2
LC11ALICHN	2789	Area of lichens from NLCD 2011 class 73	square miles	km2
LC11ALTFOR	2790	Percentage of forested land area from NLCD2011 classes 22, 41-43 and 90	percent	percent
LC11AMOSS	2791	Area of moss from NLCD 2011 class 74	square miles	km2
LC11AMXFOR	2792	Area of mixed deciduous and evergreen forest from NLCD 2011 class 43	square miles	km2
LC11AOPNLO	2793	Area of developed land, open space and low intensity combined, NLCD2011 classes 21 and 22	square miles	km2
LC11APAST	2794	Area of area of pasture area from NLCD 2011 class 81	square miles	km2
LC11APLANT	2795	Area of planted area from NLCD 2011 classes 81 and 82	square miles	km2
LC11ASCRUB	2796	Area of scrub from NLCD 2011 classes 51 and 52	square miles	km2
LC11ASEDGE	2797	Area of sedge from NLCD 2011 class 72	square miles	km2
LC11ASHRUB	2798	Area of shrub scrub from NLCD 2011 class 52	square miles	km2
LC11ASNOIC	2799	Area of snow and ice from NLCD 2011 class 12	square miles	km2
LC11ASTOR	2800	Area of water bodies and wetlands determined from the NLCD 2011 classes 11, 90 and 95	square miles	km2
LC11AWATER	2801	Area of water from NLCD 2011 class 11	square miles	km2
LC11AWATWT	2802	Area open water and herbaceous wetland from NLCD 2011 classes 11 and 95	square miles	km2
LC11AWDWET	2803	Area of area of wooded wetlands from NLCD 2011 class 90	square miles	km2
LC11AWETL	2804	Area of wetlands from NLCD 2011 classes 90 and 95	square miles	km2
LC11BARE	2805	Percentage of barren from NLCD 2011 class 31	percent	percent
LC11BARSCB	2806	Percentage of barren and scrub land from NLCD classes 31, 51, and 52	percent	percent
LC11CANOPY	4501	Percentage of drainage area covered by tree canopy from NLCD 2011	percent	percent
LC11CROP	2807	Percentage of area of cultivated crops from NLCD 2011 class 82	percent	percent
LC11CRPHAY	2808	Percentage of cultivated crops and hay, classes 81 and 82, from NLCD 2011	percent	percent
LC11DECID	2809	Percentage of deciduous forest from NLCD 2011 class 41	percent	percent
LC11DEV	2676	Percentage of developed (urban) land from NLCD 2011 classes 21-24	percent	percent
LC11DEVHI	2811	Percentage of area developed, high intensity, NLCD 2011 class 24	percent	percent
LC11DEVLMH	2926	Percentage drainage area that is in low to high developed land-use classes 22-24 from NLCD 2011	percent	percent
LC11DINT	2812	Impervious percentage computed as ((.10A21+.25A22+.65A23+.90A24)/DA)*100 from NLCD 2011	percent	percent
LC11DVLO	2813	Percentage of developed area, low intensity, from NLCD 2011 class 22	percent	percent
LC11DVMD	2814	Percentage of area developed, medium intensity, NLCD 2011 class 23	percent	percent
LC11DVMDHI	2815	Percentage of area developed, medium and high intensity, NLCD 2011 classes 23 and 24	percent	percent
LC11DVOPN	2816	Percentage of developed open area from NLCD 2011 class 21	percent	percent
LC11DWARF	2817	Percentage of dwarf scrub from NLCD 2011 class 51	percent	percent
LC11EMWET	2818	Percentage of area of emergent herbaceous wetlands from NLCD 2011 class 95	percent	percent
LC11EVERG	2819	Percentage of evergreen forest from NLCD 2011 class 42	percent	percent
LC11FOREST	2820	Percentage of forest from NLCD 2011 classes 41-43	percent	percent
LC11FORSHB	2821	Percentage of forests and shrub lands, classes 41 to 52, from NLCD 2011	percent	percent
LC11GRASS	2822	Percentage of grassland from NLCD 2011 class 71	percent	percent
LC11HERB	2823	Percentage of herbaceous from NLCD 2011 classes 71-74	percent	percent
LC11IMP	2772	Average percentage of impervious area determined from NLCD 2011 impervious dataset	percent	percent
LC11LICHEN	2825	Percentage of lichens from NLCD 2011 class 73	percent	percent
LC11MIXFOR	2826	Percentage of mixed deciduous and evergreen forest from NLCD 2011 class 43	percent	percent
LC11MOSS	2827	Percentage of moss from NLCD 2011 class 74	percent	percent
LC11OPNLO	2828	Percentage of area developed, open space and low intensity combined, NLCD2011 classes 21 and 22	percent	percent
LC11PAST	2829	Percentage of area of pasture area from NLCD 2011 class 81	percent	percent
LC11PLANT	2830	Percentage of planted area from NLCD 2011 classes 81 and 82	percent	percent
LC11SCRUB	2831	Percentage of scrub from NLCD 2011 classes 51 and 52	percent	percent
LC11SEDGE	2832	Percentage of sedge from NLCD 2011 class 72	percent	percent
LC11SHRUB	2833	Percentage of shrub scrub from NLCD 2011 class 52	percent	percent
LC11SNOIC	2834	Percent snow and ice from NLCD 2011 class 12	percent	percent
LC11STOR	2835	Percentage of water bodies and wetlands determined from the NLCD 2011	percent	percent
LC11WATER	2836	Percent of open water, class 11, from NLCD 2011	percent	percent
LC11WATWET	2837	Percent open water and herbaceous wetland from NLCD 2011 classes 11 and 95	percent	percent
LC11WDWET	2838	Percentage of area of wooded wetlands from NLCD 2011 class 90	percent	percent
LC11WETLND	2839	Percentage of wetlands, classes 90 and 95, from NLCD 2011	percent	percent
LC16AGRI	4464	Percent agriculture computed as total of grass, pasture, and crops, NLCD 2016 classes 71, 81 and 82	percent	percent
LC16BARE	4465	Percentage of barren from NLCD 2016 class 31	percent	percent
LC16BARSCB	4466	Percentage of barren and scrub land from NLCD 2016 classes 31, 51, and 52	percent	percent
LC16CROP	4467	Percentage of area of cultivated crops from NLCD 2016 class 82	percent	percent
LC16CRPHAY	4468	Percentage of cultivated crops and hay, classes 81 and 82, from NLCD 2016	percent	percent
LC16DECID	4469	Percentage of deciduous forest from NLCD 2016 class 41	percent	percent
LC16DEV	4463	Percentage of land-use categories 21-24 from NLCD 2016	percent	percent
LC16DEVHI	4470	Percentage of area developed, high intensity, NLCD 2016 class 24	percent	percent
LC16DEVLMH	4498	Percentage drainage area that is in low to high developed land-use classes 22-24 from NLCD 2016	percent	percent
LC16DINT	4471	Impervious percentage computed as ((.10A21+.25A22+.65A23+.90A24)/DA)*100 from NLCD 2016	percent	percent
LC16DVLO	4472	Percentage of developed area, low intensity, from NLCD 2016 class 22	percent	percent
LC16DVMD	4473	Percentage of area developed, medium intensity, NLCD 2016 class 23	percent	percent
LC16DVMDHI	4474	Percentage of area developed, medium and high intensity, NLCD 2016 classes 23 and 24	percent	percent
LC16DVOPN	4475	Percentage of developed open area from NLCD 2016 class 21	percent	percent
LC16DWARF	4476	Percentage of dwarf scrub from NLCD 2016 class 51	percent	percent
LC16EMWET	4477	Percentage of area of emergent herbaceous wetlands from NLCD 2016 class 95	percent	percent
LC16EVERG	4478	Percentage of evergreen forest from NLCD 2016 class 42	percent	percent
LC16FOREST	4479	Percentage of forest from NLCD 2016 classes 41-43	percent	percent
LC16FORSHB	4480	Percentage of forests and shrub lands, classes 41 to 52, from NLCD 2016	percent	percent
LC16GRASS	4481	Percentage of grassland from NLCD 2016 class 71	percent	percent
LC16HERB	4482	Percentage of herbaceous from NLCD 2016 classes 71-74	percent	percent
LC16IMP	4462	Average percentage of impervious area determined from NLCD 2016 impervious dataset	percent	percent
LC16LICHEN	4483	Percentage of lichens from NLCD 2016 class 73	percent	percent
LC16MIXFOR	4484	Percentage of mixed deciduous and evergreen forest from NLCD 2016 class 43	percent	percent
LC16MOSS	4485	Percentage of moss from NLCD 2016 class 74	percent	percent
LC16OPNLO	4486	Percentage of area developed, open space and low intensity combined, NLCD2016 classes 21 and 22	percent	percent
LC16PAST	4487	Percentage of area of pasture area from NLCD 2016 class 81	percent	percent
LC16PLANT	4488	Percentage of planted area from NLCD 2016 classes 81 and 82	percent	percent
LC16SCRUB	4489	Percentage of scrub from NLCD 2016 classes 51 and 52	percent	percent
LC16SEDGE	4490	Percentage of sedge from NLCD 2016 class 72	percent	percent
LC16SHRUB	4491	Percentage of shrub scrub from NLCD 2016 class 52	percent	percent
LC16SNOIC	4492	Percent snow and ice from NLCD 2016 class 12	percent	percent
LC16STOR	4493	Percentage of water bodies and wetlands determined from the NLCD 2016	percent	percent
LC16WATER	4494	Percent of open water, class 11, from NLCD 2016	percent	percent
LC16WATWET	4495	Percent open water and herbaceous wetland from NLCD 2016 classes 11 and 95	percent	percent
LC16WDWET	4496	Percentage of area of wooded wetlands from NLCD 2016 class 90	percent	percent
LC16WETLND	4497	Percentage of wetlands, classes 90 and 95, from NLCD 2016	percent	percent
LC92FOREST	2312	Percentage of forest from NLCD 1992 classes 41-43	percent	percent
LC92STOR	1352	Percentage of water bodies and wetlands determined from the NLCD	percent	percent
LENGTH	89	Length along the main channel from the measuring location extended to the basin divide	miles	km
LFPLENGTH	1904	Length of longest flow path	miles	km
LI10AFTCZ	4411	Percent alluvium and fine textured coastal zone from Cress and others, 2010	percent	percent
LI10AIVR	4397	Percent alkaline intrusive volcanic rock from Cress and others, 2010	percent	percent
LI10CR	4395	Percent carbonate residual material from Cress and others, 2010	percent	percent
LI10CS	4400	Percent colluvial sediment from Cress and others, 2010	percent	percent
LI10CZSCT	4412	Percent coastal zone sediment, coarse textured from Cress and others, 2010	percent	percent
LI10ESCT	4408	Percent eolian sediment, coarse textured from Cress and others, 2010	percent	percent
LI10ESFT	4409	Percent eolian sediment, fine textured from Cress and others, 2010	percent	percent
LI10EVR	4399	Percent extrusive volcanic rock from Cress and others, 2010	percent	percent
LI10GLSFT	4405	Percent glacial lake sediment, fine textured from Cress and others, 2010	percent	percent
LI10GOGL	4404	Percent glacial outwash and glacial lake sediment from Cress and others, 2010	percent	percent
LI10GOGLS	4406	Percent glacial outwash plus course and fine textured glacial lake sediment from Cress and others, 2010	percent	percent
LI10GTC	4401	Percent glacial till, clayey from Cress and others, 2010	percent	percent
LI10GTL	4402	Percent glacial till, loamy from Cress and others, 2010	percent	percent
LI10HPM	4407	Percent hydric, peat and muck from Cress and others, 2010	percent	percent
LI10NCR	4396	Percent non-carbonate residual material from Cress and others, 2010	percent	percent
LI10SLS	4410	Percent saline lake sediment from Cress and others, 2010	percent	percent
LI10SRM	4398	Percent silicic residual material from Cress and others, 2010	percent	percent
LI10TCT	4403	Percent glacial till, coarse textured from Cress and others, 2010	percent	percent
LI10WATER	4413	Percent water from Cress and others, 2010	percent	percent
LIME	150	Percentage of area of limestone geology	percent	percent
LNG_GAGE	8	Longitude	decimal degrees	decimal degrees
LOESSDEP	86	Depth of loess deposits	feet	m
LOGDA	1857	Logarithm base 10 of drainage area	Log base 10	Log base 10
LOGDA1000	1265	Log of drainage area divided by 1000	Log base 10	Log base 10
LOGPREC28	1267	Log of mean annual precipitation from PRISM divided by 28	inches	mm
LON_NHD	1206	Longitude of station location on National Hydrography Dataset	degrees C	degrees
LONG_CENT	87	Longitude Basin Centroid	decimal degrees	decimal degrees
LONG_OUT	1198	Longitude of Basin Outlet	degrees C	degrees
LONGESTFP	2092	Longest distance along stream from site of interest to top of basin	miles	km
LOWEQU	20	Indicates whether the site was used to develop low-flow regression equations	Yes or No	Yes or No
LOWREG	16	Low-Flow Hydrologic Region code	dimensionless	dimensionless
LSTPERM	85	Permeability of least permeable layer	inches per hour	mm per hr
LU12	168	Index based on the sum of land use types I and II in Portland-Vancouver WA	square miles	km2
LU92BARE	1431	Percent Barren from NLCD1992	percent	percent
LU92DEV	1430	Percentage of developed land-use categories 21-24 from NLCD 1992	percent	percent
LU92FORUP	1432	Percent Forested Upland from NLCD1992	percent	percent
LU92HRBC	1434	Percent Cultivated Herbaceous Upland from NLCD1992	percent	percent
LU92HRBN	1433	Percent Natural Herbaceous Upland from NLCD1992	percent	percent
LU92PLANT	2869	Percentage of planted area from NLCD 1992 classes 81 to 85	percent	percent
LU92WATER	1429	Percent Water from NLCD1992	percent	percent
LU92WETLN	1435	Percent Wetland from NLCD1992	percent	percent
MAJ_ROADS	2902	Length of non-state major roads in basin	miles	km
MAPM	1440	Mean Annual Precip Basin Average	inches	mm
MAR	1710	Mean annual runoff for the period of record in inches	inches	mm
MAR14D10Y	1704	14-day mean annual runoff that occurs on average once in 10 years	inches	mm
MAR14D20Y	1705	14-day eman annual runoff that occurs on average once in 20 years	inches	mm
MAR14D2Y	1702	14-day mean annual runoff that occurs on average once in 2 years	inches	mm
MAR14D50Y	1706	14-day mean annual runoff that occurs on average once in 50 years	inches	mm
MAR14D5Y	1703	14-day mean annual runoff that occurs on average once in 5 years	inches	mm
MAR1D10Y	1687	1-day mean annual funoff that occurs on average once in 10 years	inches	mm
MAR1D20Y	1688	1-day mean annual runoff that occurs on average once in 20 years	inches	mm
MAR1D2Y	1685	1-day mean annual runoff that occurs on average once in 2 years.	inches	mm
MAR1D50Y	1689	1-day mean annual runoff that occurs on aberage once in 50 years.	inches	mm
MAR1D5Y	1686	1-day mean annual runoff that occurs on average once in 5 years	inches	mm
MAR30D10Y	1709	30-day mean annual runoff that occurs on average once in 10 years	inches	mm
MAR30D2Y	1707	30-day mean annual runoff that occurs on average once in 2 years	inches	mm
MAR30D5Y	1708	30-day man annual runoff that occurs on average once in 5 years	inches	mm
MAR3D10Y	1692	3-day mean annual runoff that occurs on average once in 10 years	inches	mm
MAR3D20Y	1693	3-day mean annual runoff that occurs on average once in 20 years	inches	mm
MAR3D2Y	1690	3-daymean annual runoff that occurs on average once in 2 years	inches	mm
MAR3D50Y	1694	3-day mean annual runoff that occurs on average once in 50 years.	inches	mm
MAR3D5Y	1691	3_Day_5_Year_Mean_Annual_Runoff	inches	mm
MAR4D3Y	1695	4_Day_3_Year_Mean_Annual_Runoff	inches	mm
MAR7D10Y	1699	7-day mean annual runoff that occurs on average once in 10 years	inches	mm
MAR7D20Y	1700	7-day mean annual runoff that occurs on average once in 20 years	inches	mm
MAR7D2Y	1696	7-day mean annual runoff that occurs on avrage once in 2 years	inches	mm
MAR7D50Y	1701	7-day mean annual runoff that occurs on average once in 50 years	inches	mm
MAR7D5Y	1698	7-day mean annual runoff that occurs on average once in 5 years	inches	mm
MARAVPRE	113	Mean March Precipitation	inches	mm
MARAVTMP	114	Mean March Temperature	degrees F	degrees C
MARCFSM	1766	Mean annual runoff for the period of record in cubic feet persecond	cubic feet per second per square mile	cubic meters per second per square kilometer
MAREGION	1402	Region of Massachusetts 0 for Eastern 1 for Western	dimensionless	dimensionless
MARMAXTMP	115	Mean Maximum March Temperature	degrees F	degrees C
MAXBSLOPD	1807	Maximum basin slope, in degrees, using ArcInfo Grid with NHDPlus 30-m resolution elevation data.	degrees C	degrees
MAXBSLOPP	4393	Maximum basin slope, in percent, from 10 meter elevation grid	percent	percent
MAXTEMP	1803	Mean annual maximum air temperature over basin area from PRISM 1971-2000 800-m grid	degrees F	degrees C
MAXTEMPC	2897	Mean annual maximum air temperature over basin area, in degrees Centigrade	degrees C	degrees
MAYAVPRE	116	Mean May Precipitation	inches	mm
MAYAVTMP	117	Mean May Temperature	degrees F	degrees C
MCD	12	MCD Code	dimensionless	dimensionless
MCSP	1758	Main channel slope proportion computed by Basinsoft as main channel length divided by the square root of the main channel slope	dimensionless	dimensionless
MCSRBSFT	1756	Main-channel sinuosity ratio computed by Basinsoft as main channel length divided by basin length	dimensionless	dimensionless
MDAREA	2239	Drainage area of the basin within the State of Maryland	square miles	km2
MEDPREC	133	Median Annual Precipitation	inches	mm
MEDTILL	152	Percentage of area of medium-textured glacial till	percent	percent
MESZOIC	2451	Percent of area within the Mesozoic Basins	percent	percent
MIN_ROADS	2903	Length of non-state minor roads in basin	miles	km
MINBELEV	135	Minimum basin elevation	feet	m
MINBSLOPD	1806	Minimum basin slope, in degrees, using ArcInfo Grid with NHDPlus 30-m resolution elevation data.	degrees C	degrees
MINBSLOPP	4392	Minimum basin slope, in percent, from 10 meter elevation grid	percent	percent
MINTEMP	1802	Mean annual minimum air temperature over basin area from PRISM 1971-2000 800-m grid	degrees F	degrees C
MINTEMP_W	2671	Mean winter minimum air temperature over basin surface area	degrees F	degrees C
MIXFOR	1311	Percentage of land area covered by mixed deciduous and coniferous forest	percent	percent
MONREG	18	Monthly and Annual Hydrologic Region code	dimensionless	dimensionless
MORTILL	1183	Percentage of End Moraines of Fine-Textured Till	percent	percent
MR30D2Y	1683	30-day mean annual runoff that occurs on average once every two years	inches	mm
MR7D10Y	1682	7-day mean annual runoff that occurs on average once every 2 years	inches	mm
MR7D2Y	1681	7-day mean annual runoff that occurs on average once every 2 years	inches	mm
MSTPERM	1770	Permeability of the most permeable layer	inches per hour	mm per hr
MUCK	154	Percentage of area of peat and muck	percent	percent
MXSNO	1772	50th percentile of seasonal maximum snow depth from Northeast Regional Climate Center atlas by Cember and Wilks, 1993	inches	mm
NATWOOD	4568	Wooded under natural conditions, in percent https://doi.org/10.3133/ds866	percent	percent
NBR_CHNG	4697	Change in normalized burn ratio as defined in SIR 2011-5236	dimensionless	dimensionless
NCMR	1711	North Carolina mean annual runoff	cubic feet per second per square mile	cubic meters per second per square kilometer
NDAY_REC	1210	Number of days of record	days	days
NDAYSGT0	1211	Number of days with flow greater than zero	days	days
NDVI	4555	Normalized difference vegetation index from Landsat 5, 7, and 8 https://code.earthengine.google.com/4da059152d16a8ad3cdfa19b41f1b1f7	dimensionless	dimensionless
NDVI_pac	4556	Normalized difference vegetation index phase and amplitude coefficient, from Landsat 5, 7, and 8 https://code.earthengine.google.com/36b6b9b801be7ce72	dimensionless	dimensionless
NFSL30	1858	North-Facing Slopes Greater Than 30 Percent	percent	percent
NFSL30_10M	1854	Percent area with north-facing slopes greater than 30 percent from 10-meter NED.	percent	percent
NFSL30_30M	1181	Percent area with north-facing slopes greater than 30 percent from 30-meter DEM.	percent	percent
NO_WDFRM	4567	Not wooded or farmable from SSURGO, in percent https://doi.org/10.3133/ds866	percent	percent
NOFORWET	2645	Percentage of land area covered by non-forested wetlands - source not specified	percent	percent
NONCONTDA	2844	Area within the delineated basin that does not contribute to the flow at the outlet of the basin	square miles	km2
NOVAVPRE	127	Mean November Precipitation	inches	mm
NOVAVTMP	128	Mean November Temperature	degrees F	degrees C
NRCSPCT	2854	Percent of contributing drainage area regulated by NRCS floodwater-retarding structures	percent	percent
NY_UNDFLOW	2674	Rate of underflow downvalley through sand and gravel according to NY 2010-5063	dimensionless	dimensionless
NYMAR	2151	New York mean annual runoff from Randall (1996)	inches	mm
OCTAVPRE	125	Mean October Precipitation	inches	mm
OCTAVTMP	126	Mean October Temperature	degrees F	degrees C
OH_INF_IND	2068	Index of relative infiltration from Koltun(1986)	dimensionless	dimensionless
OHCLFAC100	1438	Ohio Climate Factor 100 Year	dimensionless	dimensionless
OHCLFAC2	1436	Ohio Climate Factor 2 Year	dimensionless	dimensionless
OHCLFAC25	1437	Ohio Climate Factor 25 Year	dimensionless	dimensionless
OHPHYSSECT	1426	Ohio Physiographic Sections	dimensionless	dimensionless
OHREG_CODE	1425	Ohio Flood Region Letter Code	dimensionless	dimensionless
OHREGA	1193	Ohio Region A Indicator	dimensionless	dimensionless
OHREGC	1194	Ohio Region C Indicator	dimensionless	dimensionless
OmegaEM	2079	Generalized regression residual as defined in TX SIR 2009-5087	dimensionless	dimensionless
OR_HIPERMA	1801	Percent basin surface area containing high permeability aquifer units as defined in SIR 2008-5126	percent	percent
OR_HIPERMG	1805	Percent basin surface area containing high permeability geologic units as defined in SIR 2008-5126	percent	percent
ORDOMISS	1832	Percent Surficial Geology as Ordovician and Mississippian Rocks	percent	percent
ORREG2	2866	Indicator flag for Oregon region 2	dimensionless	dimensionless
OTHEQU	21	Indicates whether the site was used to develop regression equations for other than high or low flows	Yes or No	Yes or No
OUTLETELEV	1867	Elevation of the stream outlet in feet above NAVD88.	feet	m
OUTLETX	2168	Basin outlet horizontal (x) location in state plane coordinates	State plane coordinates	State plane coordinates
OUTLETXA83	2500	Basin outlet horizontal (x) location in NAD 1983 Albers	NAD 1983 Albers	NAD 1983 Albers
OUTLETXRI	2369	Basin outlet horizontal (x) location in Rhode Island state plane coordinates	State plane coordinates	State plane coordinates
OUTLETY	2169	Basin outlet vertical (y) location in state plane coordinates	State plane coordinates	State plane coordinates
OUTLETYA83	2501	Basin outlet horizontal (Y) location in NAD 1983 Albers	NAD 1983 Albers	NAD 1983 Albers
OUTLETYRI	2370	Basin outlet vertical (y) location in Rhode Island state plane coordinates	State plane coordinates	State plane coordinates
OUTPLETYA83	4382	Basin outlet horizontal (Y) location in NAD 1983 Albers	NAD 1983 Albers	NAD 1983 Albers
OUTWASH	153	Percentage of area of outwash	percent	percent
OUTXA83M	2914	Basin outlet horizontal (x) location in NAD 1983 Albers	NAD 1983 Albers meters	NAD 1983 Albers meters
OUTYA83M	2915	Basin outlet horizontal (Y) location in NAD 1983 Albers	NAD 1983 Albers meters	NAD 1983 Albers meters
PCLAY	147	Percentage of lacustrine clay and silt	percent	percent
PCTREG1	1876	Percentage of drainage area located in Region 1 - Piedmont / Ridge and Valley	percent	percent
PCTREG2	1877	Percentage of drainage area located in Region 2 - Blue Ridge	percent	percent
PCTREG2011	3284	Percent of the basin which lies upstream from reservoirs in 2011	percent	percent
PCTREG3	1878	Percentage of drainage area located in Region 3 - Sandhills	percent	percent
PCTREG4	1879	Percentage of drainage area located in Region 4 - Coastal Plain	percent	percent
PCTREG5	1880	Percentage of drainage area located in Region 5 - Lower Tifton Uplands	percent	percent
PCTSNDGRV	1752	Percentage of land surface underlain by sand and gravel deposits	percent	percent
PDIGMET	2450	Percent area of igneous and metamorphic within the Piedmont Physiographic Region	percent	percent
PEMWETNWI	2945	Percentage of palustrine emergent wetlands from National Wetlands Inventory	percent	percent
PERENNIAL	3729	Stream characterized as having flow at all times	dimensionless	dimensionless
PERM12IN	1906	Area-weighted average soil permeability for top 12 inches of soil	inches per hour	mm per hr
PERM24IN	1907	Area-weighted average soil permeability for top 24 inches of soil	inches per hour	mm per hr
PERMGTE2IN	2065	Percent of area underlain by soils with permeability greater than or equal to 2 inches per hour	percent	percent
PERMSSUR	2386	Area-weighted average soil permeability from NRCS SSURGO database	inches per hour	mm per hr
PERREC	5	Period of record	years	years
PFLATLOW	2928	Flat lands lower than median elevation from Wolock 2003 unpublished data	percent	percent
PFLATUP	2929	Flat lands higher than median elevation from Wolock 2003 unpublished data	percent	percent
PII_SD	2771	Maximum 24-hour precipitation that occurs on average once in 2 years minus 1.5 inches	inches	mm
PKDPTH10	1845	Depth of the 10-year flood discharge in feet above the baseline_depth.	feet	m
PKDPTH100	1848	Depth of the 100-year flood discharge in feet above the baseline_depth.	feet	m
PKDPTH2	1844	Depth of the 2-year flood discharge in feet above the baseline_depth.	feet	m
PKDPTH25	1846	Depth of the 25-year flood discharge in feet above the baseline_depth.	feet	m
PKDPTH50	1847	Depth of the 50-year flood discharge in feet above the baseline_depth.	feet	m
PKDPTH500	1849	Depth of the 500-year flood discharge in feet above the baseline_depth.	feet	m
PLCHSWAMP	1403	Percentage of the main channel length that flows through swamps	percent	percent
PMPE	2927	Precipitation minus potential evaporation from Wolock 2003 unpublished data	millimeters (non-converting)	millimeters (non-converting)
POPDENS	67	Basin Population Density	persons per square mile	persons per km2
PRC1	1862	Mean January Precipitation	dimensionless	dimensionless
PRC4	1860	Mean April Precipitation	dimensionless	dimensionless
PRC8	1861	Mean August Precipitation	dimensionless	dimensionless
PRCgrdMET	4554	Precipitation from the gridMET dataset at http://www.climatologylab.org/gridmet.html	inches	mm
PRCWINTER	1291	Mean annual precipitation for December through February	inches	mm
PRDECFEB00	2940	Basin average mean precipitation for December to February from PRISM 1971-2000	inches	mm
PRDECFEB10	2651	Basin average mean precipitation for December to February from PRISM 1981-2010	inches	mm
PRDECFEB90	1347	Basin average mean precipitation for December to February from PRISM 1961-1990	inches	mm
PRE0611	4273	Mean precipitation for June through November	inches	mm
PRE1205	4274	Mean precipitation for December through May	inches	mm
PREBC_1112	2077	Mean annual precipitation of basin centroid for November 1 to December 31 period	inches	mm
PREBC0103	1307	Mean annual precipitation of basin centroid for January 1 to March 15 winter period	inches	mm
PREC0711	2873	Mean annual dry season precipitation, July through November	inches	mm
PREC10to4	1305	Mean precipitation for winter period defined as October to April	inches	mm
PREC1206	2874	Mean annual wet season precipitation, December through June	inches	mm
PRECIP	96	Basinwide mean annual precipitation	inches	mm
PRECIP28	1266	Mean annual precipitation from PRISM divided by 28	inches	mm
PRECIPCENT	1427	Mean Annual Precip at Basin Centroid	inches	mm
PRECIPMS	4272	Mean annual precipitation computed from monthly sums	inches	mm
PRECIPOUT	1866	Mean annual precip at the stream outlet (based on annual PRISM precip data in inches from 1971-2000)	inches	mm
PRECless35	1187	Mean Annual Precip - 35 (LA ROI Parm)	inches	mm
PRECPRIS00	2646	Basin average mean annual precipitation for 1971 to 2000 from PRISM	inches	mm
PRECPRIS10	2650	Basin average mean annual precipitation for 1981 to 2010 from PRISM	inches	mm
PREG_03_05	1310	Mean precipitation at gaging station location for March 16 to May 31 spring period	inches	mm
PREG_06_10	1309	Mean precipitation at gaging station location for June to October summer period	inches	mm
PREG_11_05	1868	Mean monthly precipitation for November through May at the stream outlet	inches	mm
PREMARAPR	2061	Precipitation March-April basin average, mean monthly as defined in SIR 2008-5065	inches	mm
PRENOVAPR	1836	Precipitation November-April basin average, mean monthly as defined in SIR 2008-5065	inches	mm
PRENOVDEC	1837	Precipitation November-December basin average, mean monthly as defined in SIR 2008-5065	inches	mm
PRJULDEC10	4125	Basin average mean precipitation for July to December from PRISM 1981-2010	inches	mm
PRJUNAUG00	2899	Mean seasonal precipitation June to August, basin average from PRISM 1971-2000	inches	mm
PRMARMAY00	2941	Basin average mean precipitation for March to May from PRISM 1971-2000	inches	mm
PRMAYJUL90	2870	Basin average mean precipitation for May to July from PRISM 1961-1990	inches	mm
PRNOVAPR00	2447	Precipitation November-April basin average, mean seasonal from PRISM 1971-2000	inches	mm
PRNOVAPR90	2446	Precipitation November-April basin average, mean seasonal from PRISM 1961-1990	inches	mm
PROTECTED	2865	Percent of protected Federal and State owned land within the basin	percent	percent
PRSEPNOV00	2942	Basin average mean precipitation for September to November from PRISM 1971-2000	inches	mm
PSFSLp1	1190	Pct. South Facing Slopes plus 1 (ID ROI Parm)	percent	percent
QSSPERMTHK	2944	Index of the permeability of surficial Quaternary sediments computed as in SIR 2014-5177	dimensionless	dimensionless
RCHRG_ANN	2075	Annual ground water recharge rate	inches	mm
RCHRG_FAL	2074	Ground water recharge rate during fall season November 1 to December 31	inches	mm
RCHRG_SPR	2072	Ground water recharge rate during spring season March 16 to May 31	inches	mm
RCHRG_SUM	2073	Ground water recharge rate during summer season June 1 to October 31	inches	mm
RCHRG_WIN	2071	Ground water recharge rate during winter season January 1 to March 15	inches	mm
RCN	162	Runoff-curve number as defined by NRCS (http://policy.nrcs.usda.gov/OpenNonWebContent.aspx?content=17758.wba)	dimensionless	dimensionless
RCNMD97	2246	Runoff curve number determined from STATSGO soils and MD Dept of Planning 1997 land use	dimensionless	dimensionless
REGULATE	4	Indicates whether flow at the site is affected by regulations or diversions	Yes or No	Yes or No
RELIEF	160	Maximum - minimum elevation	feet	m
RELRELF	159	Basin relief divided by basin perimeter	feet per mi	m per km
RELRELFff	4420	Basin relief divided by basin perimeter in ft per ft	dimensionless	dimensionless
REMARKS	6	Remarks	dimensionless	dimensionless
RESMD97	2242	Percent area of residential land use from Maryland Dept of Planning 1997 land-use data	percent	percent
ROCKDEP	71	Depth to rock	feet	m
ROIREGN	25	ID for the radius of Influence region	dimensionless	dimensionless
ROTUND	2361	Rotundity computed as 0.785 times shape factor (SHAPE)	dimensionless	dimensionless
ROTUNDBSFT	1755	Rotundity of basin from Basinsoft computed as 0.785 times shape factor	dimensionless	dimensionless
RRMEAN	4303	Relief ratio defined as (ELEV-MINBELEV)/(ELEVMAX-MINBELEV)	dimensionless	dimensionless
RSD	2401	Relative stream density first defined in SIR 2012_5171	dimensionless	dimensionless
RUGGED	1759	Ruggedness number computed as stream density times basin relief	feet per mi	m per km
RUNCO_CO	4302	Soil runoff coefficient as defined by Dhakal (20012)	dimensionless	dimensionless
RUNCOEF	161	Soil runoff coefficient defined in Davis (1975)	dimensionless	dimensionless
SANDGRAV	1290	Fraction of land surface underlain by sand and gravel deposits	dimensionless	dimensionless
SANDGRAVAF	2648	Fraction of land surface underlain by sand and gravel aquifers	dimensionless	dimensionless
SANDGRAVAP	2647	Percentage of land surface underlain by sand and gravel aquifers	percent	percent
SD_AS	2850	Percentage of Artesian Springs from Sando and others (2008)	percent	percent
SD_ASLZ	2851	Percentage of Loss Zone/Artesian Springs from Sando and others (2008)	percent	percent
SD_BHEXT	2852	Percentage of Black Hills Exterior from Sando and others (2008)	percent	percent
SD_CC	2849	Percentage of Crystaline Core from Sando and others (2008)	percent	percent
SD_LSTHW	2848	Percentage of Limestone Headwaters from Sando and others (2008)	percent	percent
SD_LSTLZ	2847	Percentage of Limestone Loss Zone from Sando and others (2008)	percent	percent
SD_SNDHLS	2853	Percentage of Sand Hills setting from Sando and others (2008)	percent	percent
SEPAVPRE	123	Mean September Precipitation	inches	mm
SEPAVTMP	124	Mean September Temperature	degrees F	degrees C
SGLR	4426	Ratio of length of stream intersecting sand and gravel deposits to total length of streams	dimensionless	dimensionless
SGSL	4427	Total length of streams within a basin that are in sand and gravel deposits	miles	km
SHAPEBSFT	1754	Shape factor from Basinsoft computed as basin length divided by basin width	dimensionless	dimensionless
SINUOS	90	Main Channel Sinuosity	miles per mile	km per km
SLENRAT	163	Main channel length - squared - divided by the contributing drainage area	dimensionless	dimensionless
SLOP30	1859	Slopes Greater Than 30 Percent	percent	percent
SLOP30_10M	1855	Percent area with slopes greater than 30 percent from 10-meter NED	percent	percent
SLOP30_30M	1182	Percent area with slopes greater than 30 percent from 30-meter DEM.	percent	percent
SLOP50	1777	Slopes Greater Than 50 Percent as percent of drainage area	percent	percent
SLOP50_30M	2855	Percent area with slopes greater than 50 percent from 30-meter DEM.	percent	percent
SLOPERAT	1760	Slope ratio computed as main channel slope divided by basin slope	dimensionless	dimensionless
SLOPERATIO	1773	Ratio of main channel slope to basin slope as defined in SIR 2006-5112	dimensionless	dimensionless
SLOPLAGPER	4459	Average land slope of the watershed from lag method from eq. 15-6 of https://directives.sc.egov.usda.gov/OpenNonWebContent.aspx?content=27002.wba	percent	percent
SLPFM3D	1905	Change in elevation divided by length between points 10 and 85 percent of distance along the longest flow path to the basin divide, LFP from 3D grid	feet per mi	m per km
SN10	26	Maximum March 15 Water Equivalent of Snow Cover at 10-Year Recurrence Interval	inches	mm
SN100	27	Maximum March 15 Water Equivalent of Snow Cover at 100-Year Recurrence Interval	inches	mm
SN2	36	Maximum March 15 Water Equivalent of Snow Cover at 2-Year Recurrence Interval	inches	mm
SN25	34	Maximum March 15 Water Equivalent of Snow Cover at 25-Year Recurrence Interval	inches	mm
SN50	37	Maximum March 15 Water Equivalent of Snow Cover at 50-Year Recurrence Interval	inches	mm
SNOAPR	38	Mean Water Equivalent of Snow Cover in April	inches	mm
SNOFALL	97	Mean Annual Snowfall	inches	mm
SNOMAR	91	Mean Water Equivalent of Snow Cover in March	inches	mm
SNOWATER	132	Water Equivalent of Mean Annual Snowfall	inches	mm
SOIL_INF	164	Soil infiltration index from NRCS	inches	mm
SOILA	144	Percentage of area of Hydrologic Soil Type A	percent	percent
SOILCorD	2080	Percentage of area of Hydrologic Soil Type C or D from SSURGO	percent	percent
SOILD	145	Percentage of area of Hydrologic Soil Type D	percent	percent
SOILINDEX	1196	Mean STATSGO Hydrologic Soils Index (from PL. 2 WRIR 03-4107 for WY)	dimensionless	dimensionless
SOILMOIST	4553	Soil moisture from the gridMET dataset at http://www.climatologylab.org/gridmet.html	inches	mm
SOILPERM	63	Average Soil Permeability	inches per hour	mm per hr
SPRNG_DENS	4581	Spring density-- number of springs divided by drainage area	springs per square mile	springs per km2
SRUN	2880	Mean annual surface runoff	inches	mm
SRUN01	4151	Mean January surface-water runoff	inches	mm
SRUN02	4152	Mean February surface-water runoff	inches	mm
SRUN03	4153	Mean March surface-water runoff	inches	mm
SRUN04	4154	Mean April surface-water runoff	inches	mm
SRUN05	4155	Mean May surface-water runoff	inches	mm
SRUN06	4156	Mean June surface-water runoff	inches	mm
SRUN0611	4168	Mean annual dry season surface runoff, June through November	inches	mm
SRUN07	4157	Mean July surface-water runoff	inches	mm
SRUN0711	2881	Mean annual dry season surface runoff, July through November	inches	mm
SRUN08	4158	Mean August surface-water runoff	inches	mm
SRUN09	4159	Mean September surface-water runoff	inches	mm
SRUN10	4160	Mean October surface-water runoff	inches	mm
SRUN11	4161	Mean November surface-water runoff	inches	mm
SRUN12	4162	Mean December surface-water runoff	inches	mm
SRUN1205	4165	Mean annual wet season surface runoff, December through May	inches	mm
SRUN1206	2882	Mean annual wet season surface runoff, December through June	inches	mm
SRUNMS	4171	Mean annual surface-water runoff computed from monthly sums	inches	mm
SSURGERODE	4578	Soil erodability from SSURGO, https://doi.org/10.3133/ds866	dimensionless	dimensionless
SSURGINDEX	4290	Soil index determined from the propostion of soil types A through D and infiltration capacity from SSURGO	dimensionless	dimensionless
SSURGMDWL	4570	Moderately well drained soil from SSURGO, percent, https://doi.org/10.3133/ds866	percent	percent
SSURGOA	2227	Percentage of area of Hydrologic Soil Type A from SSURGO	percent	percent
SSURGOAA	2223	Area underlain by hydrologic soil type A from SSURGO	square miles	km2
SSURGOAB	2232	Area underlain by hydrologic soil type B from SSURGO	square miles	km2
SSURGOAC	2230	Area underlain by hydrologic soil type C from SSURGO	square miles	km2
SSURGOAD	2225	Area underlain by hydrologic soil type D from SSURGO	square miles	km2
SSURGOB	2234	Percentage of area of Hydrologic Soil Type B from SSURGO	percent	percent
SSURGOC	2236	Percentage of area of Hydrologic Soil Type C from SSURGO	percent	percent
SSURGOCCDD	4727	Percentage of area with hydrologic soil types C, D, or C/D from SSURGO	percent	percent
SSURGOCLAY	2919	Percentage of clay soils from SSURGO	percent	percent
SSURGOD	2442	Percentage of area of Hydrologic Soil Type D from SSURGO	percent	percent
SSURGODEP	2390	Area-weighted average soil depth from NRCS SSURGO database	inches	mm
SSURGOKSAT	2391	Saturated hydraulic conductivity in micrometers per second from NRCS SSURGO database	micrometers per second	micrometers per second
SSURGOM	2930	Percentage of organic matter in soils from SSURGO	percent	percent
SSURGOSCAP	2388	Area-weighted average soil capacity from NRCS SSURGO database	inches	mm
SSURGPDRN	2499	Percentage of poorly drained soil, from SSURGO	percent	percent
SSURGPOROS	4577	Soil porosity from SSURGO, percent, https://doi.org/10.3133/ds866	percent	percent
SSURGSAND	2498	Percentage of sand in soils, from SSURGO	percent	percent
SSURGSILT	2931	Percentage of silt in soils from SSURGO	percent	percent
SSURGSPOOR	4572	Somewhat poorly drained soil from SSURGO, percent, https://doi.org/10.3133/ds866	percent	percent
SSURGSWRET	4576	Soil water retention from SSURGO, percent, https://doi.org/10.3133/ds866	percent	percent
SSURGSXESS	4571	Somewhat excessively drained soil from SSURGO, percent, https://doi.org/10.3133/ds866	percent	percent
SSURGVKSAT	4579	Vertical saturated hydraulic conductivity in micrometers per second, from SSURGO https://doi.org/10.3133/ds866	micrometers per second	micrometers per second
SSURGVPOOR	4574	Very poorly drained soil from SSURGO, percent, https://doi.org/10.3133/ds866	percent	percent
SSURGWATCP	2485	Available water capacity of the top 60 inches of soil - determined from SSURGO data	in per in	mm per mm
SSURGWDRN	4418	Percentage of well drained soil, from SSURGO	percent	percent
ST2INDNR	4297	Average transmissivity (ft2/d) for the full depth of unconsolidated deposits within 1000 ft of stream channel from IN DNR well database.	square feet per day	square meters per day
STAID	1	Station Identification Number	dimensionless	dimensionless
STANAME	2	Station Name	dimensionless	dimensionless
STATE	14	State code	dimensionless	dimensionless
STATE_HWY	2901	Length of state highways in basin	miles	km
STATOM19_8	2496	Percentage of soils with greater than 7.3 percent and less than or equal to 19.8 percent organic matter from STATSGO	percent	percent
STATOM55_7	2497	Percentage of soils with greater than 19.8 percent and less than or equal to 55.7 percent organic matter from STATSGO	percent	percent
STATSCLAY	2918	Percentage of clay soils from STATSGO	percent	percent
STATSCLAY10	2487	Percentage of soils with less than 10 percent clay from STATSGO	percent	percent
STATSCLY20	2488	Percentage of soils with greater than 10 percent and less than or equal to 20 percent clay from STATSGO	percent	percent
STATSCLY30	2489	Percentage of soils with greater than 20 percent and less than or equal to 30 percent clay from STATSGO	percent	percent
STATSCLY40	2490	Percentage of soils with greater than 30 percent and less than or equal to 40 percent clay from STATSGO	percent	percent
STATSCLY50	2491	Percentage of soils with greater than 40 percent and less than or equal to 50 percent clay from STATSGO	percent	percent
STATSCLY60	2492	Percentage of soils with greater than 50 percent and less than or equal to 60 percent clay from STATSGO	percent	percent
STATSDQUAL	2318	Drainage quality index from STATSGO, see http://water.usgs.gov/GIS/metadata/usgswrd/XML/ussoils.xml#Entity_and_Attribute_Information	dimensionless	dimensionless
STATSGKSAT	2392	Saturated hydraulic conductivity in micrometers per second from NRCS STATSGO database	micrometers per second	micrometers per second
STATSGOA	2228	Percentage of area of Hydrologic Soil Type A from STATSGO	percent	percent
STATSGOAA	2224	Area underlain by hydrologic soil type A from STATSGO	square miles	km2
STATSGOAB	2233	Area underlain by hydrologic soil type B from STATSGO	square miles	km2
STATSGOAC	2231	Area underlain by hydrologic soil type C from STATSGO	square miles	km2
STATSGOAD	2226	Area underlain by hydrologic soil type D from STATSGO	square miles	km2
STATSGOB	2235	Percentage of area of Hydrologic Soil Type B from STATSGO	percent	percent
STATSGOC	2237	Percentage of area of Hydrologic Soil Type C from STATSGO	percent	percent
STATSGOD	2894	Percentage of area of Hydrologic Soil Type D from STATSGO	percent	percent
STATSGODEP	2389	Area-weighted average soil depth from NRCS STATSGO database	inches	mm
STATSGORO	2443	Drainage runoff number from STATSGO database where 1 is well and 7 is poor	dimensionless	dimensionless
STATSOM0_5	2493	Percentage of soils with less than 0.5 percent organic matter from STATSGO	percent	percent
STATSOM2_6	2494	Percentage of soils with greater than 0.50 percent and less than or equal to 2.60 percent organic matter from STATSGO	percent	percent
STATSOM7_3	2495	Percentage of soils with greater than 2.6 percent and less than or equal to 7.3 percent organic matter from STATSGO	percent	percent
STATSPERM	2385	Area-weighted average soil permeability from NRCS STATSGO database	inches per hour	mm per hr
STATSSAND	4394	Percentage of sandy soils from STATSGO	percent	percent
STATSSCAP	2387	Area-weighted average soil capacity from NRCS STATSGO database	inches	mm
STATSWATCP	2486	Available water capacity of the top 60 inches of soil - determined from STATSGO data	in per in	mm per mm
STATYPE	3	Station type code	dimensionless	dimensionless
STORAGE	155	Percentage of area of storage (lakes ponds reservoirs wetlands)	percent	percent
STORAGEp1	1191	Percent Storage plus 1 (MN ROI Parm)	percent	percent
STORDELU	1353	Percentage of wetlands and water bodies determined from 2003 Delaware land-use dataset	percent	percent
STORMD97	2244	Percent area of storage (wetlands and water bodies) from Maryland Dept of Planning 1997 land-use data	percent	percent
STORNHD	1349	Percent storage (wetlands and waterbodies) determined from 1:24K NHD	percent	percent
STORNWI	2649	Percentage of storage (combined water bodies and wetlands) from the National Wetlands Inventory	percent	percent
STRDEN	1186	Stream Density -- total length of streams divided by drainage area	miles per square mile	km per km2
STRDENED	2513	Stream Density -- total length of streams divided by drainage area, edited from NHD	miles per square mile	km per km2
STREAM_VARG	2843	Streamflow variability index as defined in WRIR 02-4068, computed from regional grid	dimensionless	dimensionless
STRMTOT	170	Total length of mapped streams in basin	miles	km
STRMTOTED	2840	Total length of mapped streams in basin, from edited hi-res NHD	miles	km
SUBAQUEOUS	4573	Subaqueous soil from SSURGO, percent, https://doi.org/10.3133/ds866	percent	percent
SWESNODAS	4561	Snow water equivalent from the Snow Data Assimilation System https://nsidc.org/data/g02158	inches	mm
SYNTHET	23	Blank if flow data were not synthesized - S if all flows were synthesized - SL if low flows were synthesized - SP if peak flows were synthesized	dimensionless	dimensionless
T2INDNR	4298	Average transmissivity (ft2/d) for the full depth of unconsolidated deposits from IN DNR well database.	square feet per day	square meters per day
TAU_ANN_G	2906	Tau, Average annual base-flow recession time constant as defined in SIR 2008-5065, estimated from a grid	days	days
TAU_SPR_G	2908	Tau, Average base-flow recession time constant for March through April as defined in SIR 2008-5065, estimated from a grid	days	days
TAU_WIN_G	2907	Tau, Average base-flow recession time constant for November through December as defined in SIR 2008-5065, estimated from a grid	days	days
TEMP	98	Mean Annual Temperature	degrees F	degrees C
TEMP_01_03	2076	Basinwide average temperature for January to March period	degrees F	degrees C
TEMP_06_10	1308	Basinwide average temperature for June to October summer period	degrees F	degrees C
TILL	2362	Percent surface area covered by till deposits	percent	percent
TILROCK	156	Percentage of area of thin glacial till over bedrock	percent	percent
TIMETOPK	169	TimeToPeak	hours	hours
TNCLFACT2	1195	2-Year Climate Factor for Tennessee	dimensionless	dimensionless
TNPHYSFAC	1223	Tenessee physiographic factor, computed as described in WRIR 03-4176, p. 14	dimensionless	dimensionless
TNSOILFAC	1899	Tennessee soil factor, percentage of area underlain by a soil permeability greater than or equal to 2 inches per hour	percent	percent
TOC	4301	Time of concentration - time required for runoff to travel from the hydraulically most distant point in the watershed to the outlet	hours	hours
TOPODIV	4558	Topographic Diversity from the Ecologically Relevant Geomorphology dataset https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0143619	dimensionless	dimensionless
TRUN	4126	Mean annual total runoff	inches	mm
TRUN01	4127	Mean January total runoff	inches	mm
TRUN02	4128	Mean February total runoff	inches	mm
TRUN03	4129	Mean March total runoff	inches	mm
TRUN04	4130	Mean April total runoff	inches	mm
TRUN05	4131	Mean May total runoff	inches	mm
TRUN06	4132	Mean June total runoff	inches	mm
TRUN0611	4166	Mean annual dry season total runoff, June through November	inches	mm
TRUN07	4133	Mean July total runoff	inches	mm
TRUN0711	2875	Mean annual dry season total runoff, July through November	inches	mm
TRUN08	4134	Mean August total runoff	inches	mm
TRUN09	4135	Mean September total runoff	inches	mm
TRUN10	4136	Mean October total runoff	inches	mm
TRUN11	4137	Mean November total runoff	inches	mm
TRUN12	4138	Mean December total runoff	inches	mm
TRUN1205	4163	Mean annual wet season total runoff, December through May	inches	mm
TRUN1206	2876	Mean annual wet season total runoff, December through June	inches	mm
TRUNMS	4169	Mean annual total runoff computed from monthly sums	inches	mm
TXURBINDEX	1795	Urbanization index defined in WRIR 82-18	dimensionless	dimensionless
UAF_OK	1842	Urban adjustment factor as described in OK WRIR 1997-4202	dimensionless	dimensionless
UNDR_MINE	4707	Percent of contributing area underlain by permitted or historic coal mines	percent	percent
UPZ	3726	Percentage of the basin covered by upper Paleozoic strata from Reed & Bush (2005)	percent	percent
URBAN	157	Percentage of basin with urban development	percent	percent
URBAN15	2091	Basin with urban development greater than 15 percent	Yes or No	Yes or No
URBTHE2010	2923	Fraction of drainage area that is in urban classes 7 to 10 from Theobald 2010	decimal fraction	decimal fraction
URBZERO	2924	Initial proportion of urban land use for Illinois urban equations which is zero by default	dimensionless	dimensionless
VALLEN	171	Valley length measured along general path of floodplane from the outlet to the basin divide	miles	km
VOLCANIC	1776	Percent of drainage area as surficial volcanic rocks as defined in SIR 2006-5035	percent	percent
VRCARB	2453	Percent of area of carbonate rocks within the Valley and Ridge Physiographic Region	percent	percent
VRPLSLC	2452	Percent of area of siliciclastic rocks witin the Valley and Ridge or Appalachian Plateau Physiographic Regions	percent	percent
WACTCH	1302	Width of active channel	feet	m
WATCAP	60	Available water capacity of the top 60 inches of soil - determined from STATSGO data	in per in	mm per mm
WATCAPINIL	2939	Available water capacity from Miller and White 1998 in cm per 100 cm	percent	percent
WATCAPORC	2909	Available water capacity from STATSGO data using methods from SIR 2005-5116	inches	mm
WATCAPORR	2910	Available water capacity from STATSGO data using methods from SIR 2008-5126	in per in	mm per mm
WATCP_WTD	4575	Weighted available water capacity from SSURGO, percent, https://doi.org/10.3133/ds866	percent	percent
WATER	2643	Percentage of land area covered by open water - source not specified	percent	percent
WATWET	1287	Percent open water and herbaceous wetland from NLCD	percent	percent
WBANKF_D_B	4716	Bankfull width for Physiographic Division, from Bieger et al. 2015	feet	m
WBANKF_P_B	4719	Bankfull width for Physiographic Province, from Bieger et al. 2015	feet	m
WBANKF_U_B	4722	Bankfull width for USA, from Bieger et al. 2015	feet	m
WBANKFULL	1303	Width of channel at bankfull	feet	m
WE_MAR2	92	Water equivalent of snow cover as of the first week in March - 2-year recurrence interval	inches	mm
WET_FSWE	4562	Fractional surface water extent in wetlands based on the automated quantification of DeVries and others https://www.mdpi.com/2072-4292/9/8/807	decimal fraction	decimal fraction
WETLAND	158	Percentage of Wetlands	percent	percent
WETLNDLU06	2278	Percentage of wetlands from NLCD 2006 classes 90 and 95	percent	percent
WETLNDNWI	2846	Percentage of wetlands as determined from the National Wetlands Inventory (2001)	percent	percent
WR7D10Y	1684	7-day R.O. that occurs in Nov. thru Mar. once every 10 years	inches	mm
WSTOR_25S	4564	Available water storage from 0-25 centimeters depth, based on SSURGO https://doi.org/10.3133/ds866	inches	centimeters
XABNKF_D_B	4718	Bankfull cross sectional area for Physiographic Division, from Bieger et al. 2015	square feet	square meters
XABNKF_P_B	4721	Bankfull cross sectional area for Physiographic Province, from Bieger et al. 2015	square feet	square meters
XABNKF_U_B	4724	Bankfull cross sectional area for USA, from Bieger et al. 2015	square feet	square meters