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 3102 sq.mi.                            Datum is 339.91 ft.
Located in hydrologic unit 05120114 at Latitude: 38:03:40N  Longitude: 088:09:35W
Station is in the state of IL (county code 193) and serviced by the IL office.
Channel slope is 1.16 feet/mile
Stream length is 207.10 miles
Mean basin elevation is 481.00 feet above National Geodetic Vertical Datum
Percent of contributing drainage area covered by 
   Storage: 0.14%     Lakes: N.A.%        Forests: 19.49%     Glaciers: N.A.%
Soil infiltration index is 1.10 inches
Annual precipitation is 40.50 inches
Precipitation intensity is 3.30 inches/24 hour (expected on the average once each two years)
January minimum temperature is 23.00 degrees Fahrenheit
Comments and qualifications on the data:
   During a few times of extremely high stage in the period of the record, flow has also been through McHenry Slough.
   However, this site can generally be used even for daily analysis.

Daily 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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