Clarence F. Walker Lake is a 239-acre (0.97 km²) reservoir, formed by a dam and used for flood control and recreation.

It is located in Adams Township, Snyder County, Pennsylvania near the town of Troxelville.

Fish species present include northern pike, largemouth bass, walleye, black crappie, and bluegill.

Walker Lake is located on the North Branch Middle Creek, which is a tributary to Middle Creek within the Susquehanna River basin.

North Branch Middle Creek was impounded in 1970 creating the 239 acre (0.97 km²) lake, which drains a 19 mi² (49 km²) watershed consisting primarily of forested (57%) and agricultural (39%) areas.