Big Birch Lake is a 2,108-acre (9 km2) lake near the towns of Grey Eagle, Minnesota and St. Rosa, Minnesota. It has a maximum depth of 81 feet (25 m). It is popular for watersports and fishing.

Big Birch Lake
Location of Big Birch Lake in Minnesota
Location of Big Birch Lake in Minnesota
Big Birch Lake
LocationStearns / Todd counties, Minnesota, U.S.
Coordinates45°46′40″N 94°45′04″W / 45.7778°N 94.7512°W / 45.7778; -94.7512
Basin countriesUnited States
Surface area2,108 acres (9 km2)
Max. depth81 ft (25 m)