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Lake Sawyer is located 2 miles northwest of Black Diamond. It has four small islands. It is fed at the south end of the lake by Rock Creek, Ravensdale Creek, and an extensive wetland. The lake drains via Covington Creek to the Green River. Lake level is controlled by a concrete weir which was constructed in 1952.
Size (acres) 300 Maximum Depth (feet) 58 Mean Depth (feet) 26 Lake Volume (acre-feet) 7700 Drainage Area (square miles) 13.0 Altitude (feet) 512 Shoreline Length (miles) 7.0
