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 85600 sq.mi.                           Datum is 562.68 ft.
Located in hydrologic unit 07080101 at Latitude: 41:46:53N  Longitude: 090:15:04W
Station is in the state of IA (county code 045) and serviced by the IA office.
Channel slope is N.A. feet/mile
Stream length is N.A. miles
Mean basin elevation is N.A. feet above National Geodetic Vertical Datum
Percent of contributing drainage area covered by 
   Storage: N.A.%     Lakes: N.A.%        Forests: N.A.%      Glaciers: N.A.%
Soil infiltration index is N.A. inches
Annual precipitation is N.A. inches
Precipitation intensity is N.A. inches/24 hour (expected on the average once each two years)
January minimum temperature is N.A. degrees Fahrenheit
Comments and qualifications on the data:
   Prior to October 1932, discharges are from the reports of the Iowa State Planning Board. Prior to October 1939
   (published as "at Le Claire"), discharges include flow from Wapsipinicon River.  Minor flow regulation by
   navigation dams since about 1938 - should not significantly affect monthly discharges and should have only minor
   affect on daily discharges.

Daily and longer averages for 115 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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