LOCATION.-- Lat 42°05'50", long 90°07'38" (NAD of 1927), in SE1/4SW1/4 sec.2, T.24 N., R.3 E., Carroll County, Hydrologic Unit 07060005, on right bank, 60 ft downstream of U.S. Highway 52 and 64 bridge at Savanna, 4.5 mi downstream from Camp Creek, and at mile 7.8. | |
DRAINAGE AREA.-- 273 mi2. | |
PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE | |
DISCHARGE: October 1994 to September 1997. | |
STAGE: Water years 1995-1997. | |
PARTIAL RECORD: Occasional discharge measurements, water years 1978-90. | |
SURFACE-WATER QUALITY | |
CHEMICAL: Water years 1978-1990 | |
SEDIMENT: October 1994 to September 1997 | |
MISCELLANEOUS: Sediment concentration and particle size, water years 1996-97. | |
GAGE.-- Water-stage recorder. Datum of gage is 580.86 ft above NGVD of 1929. Oct. 1, 1977-Sept. 30, 1990, nonrecording gage at same site and datum. | |
EXTREMES FOR PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 5,980 ft3/s Feb. 21, 1997, gage height, 19.91 ft; Minimum discharge, 36 ft3/s Nov. 14, 1996. | |
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 2,560 mg/L, May 28, 1996; minimum daily, 6 mg/L, Sept. 29, 30, 1997. | |
SUSPENDED-SEDIMENT LOADS: Maximum daily, 16,700 tons, Feb. 21, 1997; minimum daily, 1.0 tons, Sept. 30, 1997. | |