HCDN: Streamflow Data Set, 1874 - 1988
By J.R. Slack, Alan M. Lumb, and Jurate Maciunas Landwehr
USGS Water-Resources Investigations Report 93-4076


Description, qualifying comments, and acceptable water years.

Drainage area is 6510 sq.mi.                            Datum is 700.47 ft.
Located in hydrologic unit 07080205 at Latitude: 41:58:14N  Longitude: 091:40:01W
Station is in the state of IA (county code 113) and serviced by the IA office.
Channel slope is 2.34 feet/mile
Stream length is 233.00 miles
Mean basin elevation is 1060.00 feet above National Geodetic Vertical Datum
Percent of contributing drainage area covered by 
   Storage: 0.36%     Lakes: 0.36%        Forests: 3.40%      Glaciers: N.A.%
Soil infiltration index is 3.20 inches
Annual precipitation is 31.30 inches
Precipitation intensity is 3.10 inches/24 hour (expected on the average once each two years)
January minimum temperature is 8.50 degrees Fahrenheit

This is a National Water Conditions station.
Comments and qualifications on the data:
   Only monthly discharges should be used prior to October 1930 due to rough estimates of flow for missing or
   ice-affected record. Diurnal flucuation at low flow, prior to about 1950-60, and minor regulation, after June 1979,
   (which may occasionally affect daily discharges) caused by dams about 0.5 miles upstream.

Daily and longer averages for 86 water years are acceptable (all years except partial years).
A water year with acceptable data is indicated by an asterisk in the time line, which spans 1874 through 1988.

                                                   Water year
1     1         1         1         1         1         1         1         1         1         1         1       1
8     8         8         9         9         9         9         9         9         9         9         9       9
7     8         9         0         1         2         3         4         5         6         7         8       8

The streamflow data Daily values, monthly mean values, and yearly mean values of streamflow data are available in tablular form. Select the desired option from the list below.

The data tables do not have column heading for ease of reading into statistical programs. For a detailed description of the format of the data tables, select the corresponding file from the list below.

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