Okmulgee Lake is a small reservoir about 10 km west of the centre, built in the 1930s as a Works Progress Administration project and now run as a state park with the adjacent Dripping Springs Lake. It is the standard local escape for an afternoon outdoors — fishing for catfish, bass, and crappie; picnic tables under blackjack oaks; and a few short walking trails along the shoreline.
The park has a small boat ramp and rents simple cabins for overnight stays. There is no signature attraction here — it is the kind of low-key Oklahoma lake that fills with families on summer weekends and is almost empty mid-week. Pair it with the Creek Council House for a full and unhurried day in Okmulgee.