Loon Lake is located at the top of the divide between the Spokane River and Colville River watersheds. At one time the overflow from Loon Lake actually flowed into Beaver Creek to Dragoon Creek and into the Spokane River. More specifically the lake is located at N latitude 48 degrees 3 minutes W longitude 117 degrees 38 minutes at the headwaters of the Colville River basin.
Altitude: 2,381 feet above sea level
Lake volume: 52,000 acre feet
Mean depth: 46 feet
Maximum depth: 100 feet
Surface area: Approximately 2 square miles (1,100 acres)
Shoreline: Approximately 7.9 miles
