The Muskingum River Watershed

The Muskingum River Watershed is the largest wholly contained watershed in the state of Ohio, covering about 20 percent of the state.

The watershed, which covers more than 8,000 square miles, drains into the Muskingum River. The Muskingum River eventually empties into the Ohio River at Marietta in Washington County.

The Muskingum River Watershed is comprised of three major subwatersheds - the Tuscarawas River Watershed in the northeast, the Walhonding River Watershed in the northwest and the Lower Muskingum Watershed in the south.

The Tuscarawas and Walhonding rivers flow in a southern direction where they intersect at Coshocton, forming the Muskingum River.

The system of reservoirs and dams in the watershed offers flood reduction and water conservation benefits to the region's property owners and residents.