Lake Chetac is located in the southeast corner of Sawyer County near the town of Birchwood. It is 1920 acres with a maximum depth of 26’. There are two public boat access sites, both on the east side of the lake. Lake Chetac is connected by navigable boating channel to Birch Lake.

Known as a good fishing lake, the fish population includes walleye, northern, large and smallmouth bass, and panfish.