Birch Lake is a lake 1.5 miles (2.4 km) south of Barnsdall, Oklahoma, Oklahoma, 20 miles (32 km) southwest of Bartlesville[1] and 30 miles (48 km) northwest of Tulsa.

The drainage area for Birch Lake is 66 square miles (170 km2).

Its area covers 1,137 acres (4.60 km2) (conservation level).

It is twenty miles (32 km) southwest of Bartlesville, Oklahoma.

[4] The marine law enforcement branch of the Oklahoma Highway Patrol, Troop W, is headquartered at Birch Lake.