Blackwater Lake (DOW# 11-0274; Lake Class 25) is a 767-acre lake located near Longville, MN. A DNR owned public access on the northeast shore. Blackwater Lake has 7.63 miles of shoreline and a maximum depth of 67 feet. The DNR has classified Minnesota's lakes into 43 different classes based on physical, chemical and other characteristics. Blackwater Lake is in Lake Class 25; lakes in this class are deep, clear, and irregularly shaped.
Blackwater Lake is one of the top Largemouth and Smallmouth Bass lakes in the Walker Area. Blackwater has both quantity and quality with fish up to 20 inches. Northern Pike are abundant in Blackwater Lake and catch rates tend to range between 7 and 12 fish per gill net with Northern Pike up to 30 inches sampled. Walleye numbers in Blackwater Lake are moderate and Walleye sampled ranged in length from 8 to 24 inches, with a large percentage of Walleye sampled over 20 inches long. Bluegill and Black Crappie can also provide additional fishing opportunities to anglers, with quality-sized fish present for both species.
Other fish species that anglers can expect to encounter include Brown Bullhead, Hybrid Sunfish Pumpkinseed, Rock Bass, Tullibee (Cisco), White Sucker, Yellow Bullhead, and Yellow Perch.
People can have significant impacts on lakes and the fish populations they support. Harvest, lakeshore development, removal of shoreline vegetation, and introductions of invasive species can all adversely affect fish populations. No aquatic invasives have been identified in Blackwater Lake. AIS (aquatic invasive species) are moved from infested to non-infested waters by anglers, boaters, and lake shore owners and can adversely impact lakes and fish populations. To avoid spreading AIS, lake users are required to remove all aquatic plants or animals from their watercraft and drain all water from their boat before leaving the access. If you suspect an infestation of an invasive species in this lake, save a specimen and report it to a local natural resource office. Additional information on all of these topics can be found on the DNR website (www.dnr.state.mn.us) or by contacting the Walker Area Fisheries office.