LOCATION.-- Lat 39°52'44", long 88°22'35" (NAD of 1927), NW1/4NE1/4, sec. 2, T.16 N., R.7 E., Douglas County, Hydrologic Unit 07140201, on left bank at downstream side of bridge, 0.1 mi downstream from Twomile Slogh, 6.0 mi southwest of Pestotum, and at mile 271.4. | |
DRAINAGE AREA.-- 109 mi2. | |
PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE | |
DISCHARGE: October 1964 to September 1979. | |
SURFACE-WATER QUALITY | |
CHEMICAL: Water years 1978-79. | |
REVISED RECORDS.-- WDR IL-75: Drainage area. | |
GAGE.-- Water-stage recorder. Datum of gage is 648.40 ft above NGVD of 1929. Oct. 1, 1964 to Nov. 16, 1965, nonrecording gage at same site and datum. | |
REMARKS.-- Discharge adjusted for pumpage. Water is pumped into river from wells 15 mi upstream. | |
EXTREMES FOR PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 3,310 ft3/s June 23, 1974, gage height, 15.92 ft; minimum, 2.9 ft3/s Sept. 9, 1966. | |