Birch Lake is a lake 1.5mi south of Barnsdall, Oklahoma, Oklahoma, 20mi southwest of Bartlesville and 30miles northwest of Tulsa. The drainage area for Birch Lake is 66mi2. Its area covers 1137acre (conservation level). The total capacity is: 52800acre.ft, subdivided into: Conservation 15800acre.ft, Flood control 39000acre.ft,and Inactive storage 15840acre.ft.The lake is formed from Birch Creek, a tributary of Bird Creek. It eventually empties into the Arkansas River. It is twenty miles (32 km) southweast of Bartlesville, Oklahoma.The lake has largemouth bass, walleye, spotted bass, smallmouth bass, hybrid striped bass, black and white crappie, channel and flathead catfish, and different types of sunfish. The marine law enforcement branch of the Oklahoma Highway Patrol, Troop W, is headquartered at Birch Lake.