Blackwater Lake is a 767 acre lake located near Longville, MN that has 7.5 miles of shoreline and a maximum depth of 67 feet. There is a Minnesota Department of Natural Resources (DNR) public access on the north shore of the east bay off County Road 11. This lake is a good lake for northern pike and largemouth bass fishing. Other game fish include smallmouth bass and walleye. Panfish include bluegill, crappie, rock bass and perch.