Two lakes in the Pawpaw mountains, Quapaw and Highwater, were suffering from serious declines in their fish populations ten years ago  Since that time, there has been a moratorium on fishing at Quapaw Lake, and the fish population there has recovered  At Highwater Lake, no such moratorium has been imposed, and the fish population has continued to decline
Thus, the ban on fishing is probably responsible for the rebound in the fish population at Quapaw Lake
Highwater Lake is much larger than Quapaw Lake.