Overview Sainte Marie Park sits on the banks of Lake Langhofer and the Arkansas River by Pool 3 Lock and Dam. Whether boating, fishing, hiking, picnicking or hosting a group event, Sainte Marie has facilities to accommodate a range of activities.Recreation The campground is popular among fishermen. There is excellent catfish fishing in the tail-waters of Joe Hardin Lock and Dam as well as Emmitt Sanders Lock and Dam at the upstream end of Pool 3. Anglers often catch bass, crappie and bream.