Mosquito Creek Lake is a reservoir in Trumbull County, northeast Ohio, in the United States. It is approximately 6 mi northeast of Warren. It is fed by Mosquito Creek and Walnut Creek. Construction was completed in 1944.DescriptionMosquito Creek Lake is a man-made reservoir. It is the second-largest inland lake in Ohio. Depth averages 8 to 15 feet (depending on season), but the southern end, towards the dam, averages 20to. The northern end is considerably more shallow, with depths averaging only 4 to 10 feet. Completely surrounding the lake is Mosquito Lake State Park. The lake is bisected by the Ohio State Route 88 causeway. The drainage area for lake is.HistoryInitial plans for Mosquito Creek Reservoir were developed in the 1930s. The reservoir was authorized by the Flood Control Act of 1938 and it was constructed as a means for flood control and the regulation of streamflow. Construction of the dam that created the lake was completed by the U.S. Army Corps of Engineers in April, 1944. The reservoir provides flood protection for the upper Ohio River, Beaver river and the Mahoning River valley. Additional benefits contemplated were reduction in pollution from local steel processing, and the provision of water supply to the city of Warren. In 1971 the Board on Geographic Names Decisions officially changed the name from Mosquito Creek Reservoir to Mosquito Creek Lake.RecreationThe lake is surrounded by Mosquito Lake State Park, operated by the Ohio Division of Natural Resources. There are picnicking and camping, as well as designated hiking trails. Opportunities for water recreation are provided, including dock rentals, boat ramps, and various watercraft rentals. Fishing for flathead catfish is highly recommended at the location. Other species recreationally fished in the lake are bluegill, channel catfish, crappie, largemouth bass, northern pike, ring perch, and walleye.