The Alum Creek Lake dam was built between 1970 and 1974, on Alum Creek. This created a reservoir with a capacity of 134,815 acre feet. 2 The integrity of the black shale bedrock that the dam rests on was called into question in 1975 and cable anchors were installed in 1977.
The Alum Creek Lake site is public recreation site. The site contains a visitor center with a museum and theater. The museum has exhibits detailing the history of the U.S. Army Corps of Engineers. The museum also has child friendly interactive exhibits, including a water management wall. Outdoor activities include, bike trails, boating, camping, fishing, hiking, horseback riding, and hunting. Alum Creek is also the home of several Adena burial mounds.