Lake St. Helen
General data
- Name: Lake St. Helen
- Water system: St. Lawrence River
- Water type: Natural lake
- Progression: South Branch Au Sable River -> Au Sable River -> Lake Huron -> St. Clair River -> Lake St. Clair (North America) -> Detroit River -> Lake Erie -> Niagara River -> Lake Ontario -> St. Lawrence River -> Gulf of St. Lawrence -> Atlantic Ocean -> Planet Earth
- Climates: Temperate
- Continents: North America
- Countries: United States of America
Lake St. Helen is a 2,400-acre (9.7 km2) public lake located in Roscommon County in the U.S. state of Michigan, and borders on the community of St. Helen, Michigan. It is the headwaters for the south branch of the Au Sable River. From 1998 to 2003, the Lake was subject to a water weed (millfoil) eradication project, involving weevil restocking, which was successful at the time. Fishing is available throughout the lake, albeit different fish are found in different places, and includes: Largemouth bass, bluegill, crappie, perch, pike, and walleye. A Bluegill Festival is held each summer.