USGS Water-Year Summary 2020
03272100 GREAT MIAMI RIVER AT MIDDLETOWN OH
LOCATION - Lat 39°31'11.59", long 84°24'45.64" referenced to North American Datum of 1983, Butler County, OH, Hydrologic Unit 05080002, on downstream side of Central Avenue bridge on State Route 122, 1.9 mi downstream from Browns Run, and on northwest side of city of Middletown.
DRAINAGE AREA - 3,134 mi².
PERIOD OF RECORD - July 1994 to current year.
GAGE - Water-stage recorder and concrete control. Datum of gage is 625.08 ft (NAVD 1988). Prior to October 2013 at 626 ft (NGVD 1929) (levels by Miami Conservancy District).
COOPERATION - Base data furnished by Miami Conservancy District.