Delaware Lake

Delaware Lake

Delaware Lake is part of a system of dams that reduce flood stages in the Olentangy, Scioto, and Ohio River Basins; benefiting communities and agricultural lands between Delaware and the Gulf of Mexico. Delaware Dam and Reservoir is located 32 miles above the mouth of the scenic Olentangy River, a tributary of the Scioto River, near Delaware Ohio. Authorized by the Flood Control Act of 1938 for the purposes of flood reduction, low-flow control for pollution reduction and water supply, recreation and fish and wildlife management, the project was constructed between 1947 and 1951 at a cost of $ 4,307,000. The project was constructed and is operated by the U.S. Army Corps of Engineers, Huntington District. The Dam is a rolled earth fill type with a concrete gated spillway section. At a length of 3 ½ miles and a height of 92 feet, Delaware Dam controls a drainage area of 386 square miles through the use of five gated sluices and six 25 foot by 32 foot tainter/radial gates. Golden Age and Golden Access passports may be used for a 50% discount at all Federally operated areas where a fee is charged.

Handicapped Access

Universally Accessible Facilities are provided at the Project Office, in the Recreation Area, etc.

Historical Info

Delaware Lake was designed and built by the Huntington District of the U.S. Army Corps of Engineers. The project was first authorized by the Flood Control Act of 1938 as a unit in the larger comprehensive flood control plan for the Ohio River Basin. Dam construction was completed in July, 1948.


740-363-4011. Call 740-369-2015 for a recorded message providing updated lake and project information. Delaware State Park Office, 740-369-2761. Delaware Wildlife Area, 740-747-2525


Delaware Dam is located about 4 miles north of the city of Delaware, Ohio. From Delaware take Route 23 north to the dam and project office. See Map

Mailing Address

U.S. Army Corps of Engineers
Delaware Lake
3920 US Highway 23N
Delaware, OH 43015

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