USGS Water-Year Summary 2022
03150000 MUSKINGUM RIVER AT MCCONNELSVILLE OH
LOCATION - Lat 39°38'42", long 81°51'00" referenced to North American Datum of 1927, Morgan County, OH, Hydrologic Unit 05040004, on left bank just upstream from Dam 7 at McConnelsville, and 3.5 mi downstream from Oilspring Run.
DRAINAGE AREA - 7,422 mi².
REVISIONS HISTORY - WSP 783: 1913(M). WSP 853: 1933(M). WSP 1173: 1922-24, 1928(M). WSP 1907: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1921 to September 1992. October 2001 to current year.
GAGE - Water-stage recorder. Datum of gage is 649.62 ft (NAVD 1988). Prior to October 1, 2010 datum of gage was 650.31 ft (1912 adjustment). Prior to July 27, 1922 nonrecording gage at site 0.5 mi upstream at (1912 adjustment); July 27, 1922-Aug. 10, 1926, nonrecording gage; Aug. 11, 1926-Sept. 8, 1959, water-stage recorder at present site (1912 adjustment); Sept. 9, 1959-July 18, 1960, nonrecording gage at site 0.5 mi upstream at (1912 adjustment) .
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Mar. 1913 reached a stage of 33.5 ft, discharge, 270,000 ft³/s computed by U.S. Army Corps of Engineers.