Greenville Creek is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map , accessed May 19, 2011 tributary of the Stillwater River in southwestern Ohio in the United States. Via the Stillwater River, the Great Miami River, and the Ohio River, its water flows to the Mississippi River and ultimately the Gulf of Mexico. The creek starts in extreme eastern Indiana in Randolph County. It soon flows into Darke County, Ohio, and joins with a tributary that also starts in Indiana, Dismal Creek. It flows through Greenville and Gettysburg before entering Miami County. Near its confluence with the Stillwater River at Covington it drops at Greenville Falls in a glacially-cut gorge that is a state nature preserve.
A USGS stream gauge on the creek near Bradford recorded a mean annual discharge of during water years 1931–2019. The highest daily mean discharge during that period was on May 14, 1933. The lowest daily mean discharge was on September 17, 1963.
See also List of rivers of Indiana List of rivers of Ohio
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