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 9549 sq.mi.                            Datum is 564.06 ft.
Located in hydrologic unit 07090005 at Latitude: 41:33:35N  Longitude: 090:10:55W
Station is in the state of IL (county code 161) and serviced by the IL office.
Channel slope is 1.11 feet/mile
Stream length is 309.23 miles
Mean basin elevation is 956.00 feet above National Geodetic Vertical Datum
Percent of contributing drainage area covered by 
   Storage: 6.48%     Lakes: N.A.%        Forests: 6.33%      Glaciers: N.A.%
Soil infiltration index is 3.50 inches
Annual precipitation is 33.00 inches
Precipitation intensity is 2.90 inches/24 hour (expected on the average once each two years)
January minimum temperature is 13.00 degrees Fahrenheit

This is a National Water Conditions station.
Comments and qualifications on the data:
   Some diurnal fluctuation caused by upstream powerplants: record should not be used for analysis at less than
   monthly resolution.

Monthly and longer averages for 49 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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