Lake Size: 1,000 acres
Shoreline Length (Miles): 10.9 mi (17.5 km)
Deepest Depth: 90 ft (27 m)
Latitude: 47.337222
Longitude: -122.954083
Lake Level Above Sea Level: 194 ft (59 m)
Counties: Mason County
Cities: Belfair

Information: Mason Lake is a natural elongated lake south of Belfair, Washington, USA in Mason County. The lake is on the isthmus of the Kitsap Peninsula between the Hood Canal and Pickering Passage of the Case Inlet. The smaller Benson Lake is to its eastern side. More than a thousand residents live yearlong around the shores of Mason Lake, the second largest freshwater lake in Mason County. Originally a summer vacation community, the lake has always been known for its power boats, jet skis and water skiing. A county park provides swimming, picnic and boat launching access. The single lane boat launch is on the steeper side and winches tend to get jammed if they're in the locked or retrieval state. The community of Mason Lake is located centrally between Grapeview and Harstine Island to the east, and Twanoh State Park to the west. Much of the area surrounding Mason Lake is commercial timberland in various states of harvest.