Mosquito Lake is renowned for its excellent walleye and crappie fishing. Anglers also have success catching bluegill,perch,bass,and flathead/Channel catfish. A feature unique to Mosquito Creek Lake is its use of an uncontrolled natural spillway. The natural spillway is located at the upper end of the lake in a low-lying reach of the Mosquito Creek-Grand River Divide. The elevation of the spillway at the point of the divide is such that if an impoundment of floodwaters should fill the lake,to an elevation of 904 feet above sea level,the southerly outflow of the lake will be reversed. The outflow would then be the discharge through the natural spillway into a tributary of the Grand River,which flows into Lake Erie.