The Olentangy River flows 88.5 miles from its headwaters in Crawford and Richland County through Marion and Morrow County into the City of Delaware and ending in Franklin County at its confluence with the Scioto River.
The Olentangy River has a drainage area of 536 square miles. Twenty-two miles of the Olentangy were designated a state Scenic River by the Ohio Department of Natural Resources in 1973. The designation runs from the Delaware Dam, north of the City, to Wilson Bridge Rd in Worthington.
Drains to River Brochure
City Watershed Coordinator Kristin Piper can be reached at 740-203-1905.
Olentangy Watershed Alliance