USGS Water-Year Summary 2023
06903880 Rathbun Lake near Rathbun, IA
LOCATION - Lat 40°49'24.6", long 92°53'39.9" referenced to North American Datum of 1983, in SE 1/4 NW 1/4 NE 1/4 sec.35, T.70 N., R.18 W., Appanoose County, IA, Hydrologic Unit 10280201, at control tower of Rathbun Dam, 1.8 mi north of Rathbun, 3.9 mi upstream from Walnut Creek, and 30.1 mi upstream from Iowa-Missouri state line.
DRAINAGE AREA - 549 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - Reservoir storage records from October 1969 to September 2000; stage-only records from October 2000 to current year.
GAGE - Water-stage recorder. Datum of gage is 0.00 ft above North American Vertical Datum of 1988.
EXTREMES FOR PERIOD OF RECORD - Maximum instantaneous gage height, 927.16 ft, July 28, 1993; minimum instantaneous gage height, 855.40 ft (prior to completion of reservoir impoundment), October 6-10, 1969.