USGS Water-Year Summary 2023
03231500 SCIOTO RIVER AT CHILLICOTHE OH
LOCATION - Lat 39°20'29", long 82°58'16" referenced to North American Datum of 1927, Ross County, OH, Hydrologic Unit 05060002, on right bank, 1,400 ft downstream from Bridge Street bridge, 7.4 mi upstream from Paint Creek, and 15.4 mi downstream from Deer Creek.
DRAINAGE AREA - 3,849 mi².
- WSP 803: 1929(M). WSP 1908: Drainage area.
PERIOD OF RECORD - December 1913 to September 1914 (gage heights and discharge measurements only). October 1920 to current year. Monthly discharge only for some periods, published in WSP 1305. Gage-height records collected in this vicinity since 1907 are contained in reports of the National Weather Service.
GAGE - Water-stage recorder. Datum of gage is 593.57 ft (NAVD 1988) (levels by U.S. Army Corps of Engineers). Prior to October 2010 datum was 594.05 ft (NGVD 1929). Prior to Sept. 30, 1914, nonrecording gage at site 1,300 ft upstream at different datum; Apr. 1, 1921-Aug. 6, 1930, nonrecording gage, at site 1,400 ft upstream at (NGVD 1929) datum; Aug. 7, 1930-Sept. 30, 1969, water-stage recorder 900 ft upstream at (NGVD 1929) datum.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Mar. 26, 1913, reached a stage of 39.8 ft; discharge, 260,000 ft³/s (estimated by Franklin County Conservancy District).