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StreamStats Data-Collection Station Report


USGS Station Number 06807410
Station Name West Nishnabotna River at Hancock, IA
 
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Descriptive Information

Station Type Streamgage, continuous record
Location
Gage
Regulation and Diversions
Regulated? False
Period of Record 10/2/59-9/30/14
Remarks
Latitude (degrees NAD83) 41.38999164
Longitude (degrees NAD83) -95.37166665
Hydrologic unit code 10240002
County 155-Pottawattamie
HCDN2009 No

       
Physical Characteristics

Characteristic Name Value Units Citation Number

Descriptive Information
Low_Flow_Region_Code Southern dimensionless 305
Low_Flow_Regression_Equation Y Yes or No 305
Datum_of_Latitude_Longitude NAD83 dimensionless 30
District_Code 19 dimensionless 30
Begin_date_of_record 10/1/1959 days 41
End_date_of_record 9/30/2003 days 41
Number_of_days_of_record 16071 days 41
Number_of_days_GT_0 16071 days 41
Precipitation Statistics
24_Hour_2_Year_Precipitation 3.1000 inches 31
24_Hour_10_Year_Precipitation 4.386 inches 244
Mean_Annual_Precipitation 29.300 inches 31
Basin_Ave_Precip_Jul_Dec_PRISM_2010 2.798 inches 305
Temperature Statistics
Mean_Min_January_Temperature 11.000 degrees F 31
Topographical Characteristics
Mean_Basin_Slope_from_10m_DEM 6.765 percent 305
Geological Characteristics
Des_Moines_Lobe 0 percent 244
Land Cover Characteristics
Percent_Crops_and_Hay_from_NLCD2011 90.32 percent 305
Soil Properties
SSURGO_Percent_Hydrologic_Soil_Type_A 0.027 percent 305
SSURGO_Percent_Hydrologic_Soil_Type_B 92.219 percent 243
SSURGO_Percent_Hydrologic_Soil_Type_C 4.078 percent 305
SSURGO_Saturated_Hydraulic_Conductivity 8.417 micrometers per second 243
SSURGO_Percent_Hydrologic_Soil_Type_D 0.118 percent 305
Stream Channel Properties
Drainage_Frequency 1.609 1st-order streams per square mile 305
Stream_Slope_10_and_85_Method 5.6500 feet per mi 31
Total_Stream_Length 1329.466 miles 244
Relative_Stream_Density 0.339 dimensionless 243
Basin Dimensional Characteristics
Contributing_Drainage_Area 609 square miles 30
Drainage_Area 609 square miles 305
Basin_Shape_Factor 4.057 dimensionless 244
Basin_Length_ArcHydro_Method 49.768 miles 244
Constant_of_Channel_Maintenance 0.459 square mile per mile 244

 
Streamflow Statistics



Statistic Name


Value


Units

Citation Number


Preferred?
Years of Record Standard Error, percent
Variance log-10
Lower 95% Confidence Interval Upper 95% Confidence Interval
Start Date

End Date


Remarks

Peak-Flow Statistics
Mean_Annual_Flood 5400.00 cubic feet per second 31 Y
2_Year_Peak_Flood 9340 cubic feet per second 244 Y 51 9.17 0.00158 7250 11000 3/29/1960 6/27/2010 EMA/MGB
5_Year_Peak_Flood 15000 cubic feet per second 244 Y 51 9.2 0.00159 12600 18500 3/29/1960 6/27/2010 EMA/MGB
10_Year_Peak_Flood 18700 cubic feet per second 244 Y 51 10.5 0.00207 15600 24300 3/29/1960 6/27/2010 EMA/MGB
25_Year_Peak_Flood 23400 cubic feet per second 244 Y 51 12.4 0.00288 19100 32400 3/29/1960 6/27/2010 EMA/MGB
50_Year_Peak_Flood 26900 cubic feet per second 244 Y 51 14.1 0.00369 21400 39100 3/29/1960 6/27/2010 EMA/MGB
100_Year_Peak_Flood 30200 cubic feet per second 244 Y 51 15.9 0.00473 23500 46500 3/29/1960 6/27/2010 EMA/MGB
200_Year_Peak_Flood 33500 cubic feet per second 244 Y 51 18 0.00602 25400 55000 3/29/1960 6/27/2010 EMA/MGB
500_Year_Peak_Flood 37700 cubic feet per second 244 Y 51 21.1 0.00818 27500 68400 3/29/1960 6/27/2010 EMA/MGB
Regression_2_Year_Peak_Flood 9050 cubic feet per second 244 Y RRE
Regression_5_Year_Peak_Flood 16300 cubic feet per second 244 Y RRE
Regression_10_Year_Peak_Flood 20100 cubic feet per second 244 Y RRE
Regression_25_Year_Peak_Flood 26500 cubic feet per second 244 Y RRE
Regression_50_Year_Peak_Flood 30700 cubic feet per second 244 Y RRE
Regression_100_Year_Peak_Flood 35500 cubic feet per second 244 Y RRE
Regression_200_Year_Peak_Flood 40100 cubic feet per second 244 Y RRE
Regression_500_Year_Peak_Flood 45600 cubic feet per second 244 Y RRE
Weighted_5_Year_Peak_Flood 15000 cubic feet per second 244 Y 8.3 0.0013 12800 17700 WIE
Weighted_10_Year_Peak_Flood 18900 cubic feet per second 244 Y 8.9 0.0015 15800 22500 WIE
Weighted_25_Year_Peak_Flood 23900 cubic feet per second 244 Y 10.6 0.0021 19400 29400 WIE
Weighted_50_Year_Peak_Flood 27600 cubic feet per second 244 Y 12.2 0.0028 21700 35000 WIE
Weighted_100_Year_Peak_Flood 31400 cubic feet per second 244 Y 13.9 0.0036 23900 41100 WIE
Weighted_200_Year_Peak_Flood 35200 cubic feet per second 244 Y 15.5 0.0045 26000 47700 WIE
Weighted_500_Year_Peak_Flood 40000 cubic feet per second 244 Y 18 0.006 28100 56700 WIE
Log_Mean_of_Annual_Peaks 3.9540 Log base 10 31 Y
Log_STD_of_Annual_Peaks 0.2720 Log base 10 31 Y
Log_Skew_of_Annual_Peaks -0.4180 Log base 10 31 Y
WRC_Mean 3.9540 Log base 10 31 Y
WRC_STD 0.2720 Log base 10 31 Y
WRC_Skew -0.4000 Log base 10 31 Y
Systematic_peak_years 16.000 years 31 Y
Peak_years_with_historic_adjustment 0.0000 years 31 Y
Weighted_2_Year_Peak_Flood 9320 cubic feet per second 244 Y 8.6 0.0014 7890 11000 WIE
Low-Flow Statistics
1_Day_10_Year_Low_Flow 11.1 cubic feet per second 243 Y 38 4/1/1968 3/31/2006
7_Day_10_Year_Low_Flow 12.6 cubic feet per second 243 Y 38 4/1/1968 3/31/2006
30_Day_5_Year_Low_Flow 28.5 cubic feet per second 243 Y 38 4/1/1968 3/31/2006
30_Day_10_Year_Low_Flow 16.2 cubic feet per second 243 Y 38 4/1/1968 3/31/2006
Low_flow_years 17.000 years 31 Y
1_Day_10_Year_lowflow_Oct_to_Dec 18.3 cubic feet per second 305 Y 46 10/1/1968 12/31/2013
7_Day_10_Year_lowflow_Oct_to_Dec 21.9 cubic feet per second 305 Y 46 10/1/1968 12/31/2013
Low_Flow_Trend Yes Yes or No 305 Y
Flow-Duration Statistics
1_Percent_Duration 2700 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
2_Percent_Duration 1830 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
3_Percent_Duration 1500 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
5_Percent_Duration 1130 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
10_Percent_Duration 774 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
15_Percent_Duration 577 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
20_Percent_Duration 456 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
25_Percent_Duration 381 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
30_Percent_Duration 325 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
35_Percent_Duration 280 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
40_Percent_Duration 243 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
45_Percent_Duration 209 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
50_Percent_Duration 179 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
55_Percent_Duration 155 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
60_Percent_Duration 132 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
65_Percent_Duration 111 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
70_Percent_Duration 95 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
75_Percent_Duration 80 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
80_Percent_Duration 66 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
85_Percent_Duration 52 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
90_Percent_Duration 40 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
95_Percent_Duration 27 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
97_Percent_Duration 20 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
98_Percent_Duration 17 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
99_Percent_Duration 14 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
Annual Flow Statistics
Mean_Annual_Flow 350 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
Daily_flow_years 17.000 years 31 Y
Stand_Dev_of_Mean_Annual_Flow 213 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
Maximum_Annual_Mean_Flow 966 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
Minimum_Annual_Mean_Flow 42 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
Tau_Annual_Computed 33.185 days 243 Y
Seasonal Flow Statistics
Oct_to_Dec_1_Day_10_Year_lowflow 18.3 cubic feet per second 305 Y 46 10/1/1968 12/31/2013
7_Day_10_Year_lowflow_Oct_to_Dec 21.9 cubic feet per second 305 Y 46 10/1/1968 12/31/2013
Apr_to_Jun_1_Day_10_Year_Low_Flow 45.3 cubic feet per second 305 Y 46 4/1/1969 6/30/2014
Apr_to_Jun_7_Day_10_Year_Low_Flow 48.5 cubic feet per second 305 Y 46 4/1/1969 6/30/2014
Apr_to_Jun_30_Day_10_Year_Low_Flow 70.3 cubic feet per second 305 Y 46 4/1/1969 6/30/2014
Oct_to_Dec_30_Day_10_Year_Low_Flow 32.3 cubic feet per second 305 Y 46 10/1/1968 12/31/2013
General Flow Statistics
Minimum_daily_flow 2.2 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
Maximum_daily_flow 23300 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
Std_Dev_of_daily_flows 676 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
Average_daily_streamflow 322.625 cubic feet per second 41 Y 45
Streamflow_Variability_Index_At_Site 0.534 dimensionless 243 Y
Harmonic_Mean_Streamflow 91 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
Mean_of_Logs_of_Daily_Values 2.24758 Log base 10 325 Y 56 10/1/1959 9/30/2015
Std_Dev_of_Logs_of_Daily_Values 0.5003 Log base 10 325 Y 56 10/1/1959 9/30/2015
Skew_of_Logs_of_Daily_Values 0.025172 Log base 10 325 Y 56 10/1/1959 9/30/2015
Non_Zero_Adjusted_Harmonic_Mean_Flow 91 cubic feet per second 325 Y 56 10/1/1959 9/30/2015
Base Flow Statistics
Number_of_years_to_compute_BFI 44 years 42 Y 45
Average_BFI_value 0.561 dimensionless 42 Y 45
Std_dev_of_annual_BFI_values 0.16 dimensionless 42 Y 45
Base_Flow_Index 0.561 dimensionless 243 Y
Probabillity Statistics
Probability_flow_durations_are_zero 0 dimensionless 325 Y 56 10/1/1959 9/30/2015

   
Citations

Citation Number Citation Name and URL

30 Imported from NWIS file
31 Imported from Basin Characteristics file
41 Wolock, D.M., 2003, Flow characteristics at U.S. Geological Survey streamgages in the conterminous United States: U.S. Geological Survey Open-File Report 03-146, digital data set
42 Wolock, D.M., 2003, Base-flow index grid for the conterminous United States: U.S. Geological Survey Open-File Report 03-263, digital data set
243 Eash, D.A., and Barnes, K.K., 2012, Methods for estimating selected low-flow frequency statistics and harmonic mean flows for streams in Iowa: U.S. Geological Survey Scientific Investigations Report 2012-5171, 99 p.
244 Eash, D.A., Barnes, K.K., and Veilleux, A.G., 2013, Methods for estimating annual exceedance-probability discharges for streams in Iowa, based on data through water year 2010: U.S. Geological Survey Scientific Investigations Report 2013-5086, 63 p. with a
305 Eash, D.A., Barnes, K.K., and O’Shea, P.S., 2016, Methods for estimating selected spring and fall low-flow frequency statistics for ungaged stream sites in Iowa, based on data through June 2014: U.S. Geological Survey Scientific Investigations Report 2016–5111, 32 p.
325 Granato G.E., Ries, K.G., III, and Steeves, P.A., 2017, Compilation of streamflow statistics calculated from daily mean streamflow data collected during water years 1901–2015 for selected U.S. Geological Survey streamgages: U.S. Geological Survey Open-File Report 2017-1108, 17 p.