Tustumena Lake, located in Kenai Peninsula, Alaska, has a maximum length of 25 miles and a maximum width of six miles.
Tustumena Lake is a lake on the west side of the Kenai Peninsula in southcentral Alaska, within Kenai National Wildlife Refuge and near the town of Kasilof. The lake is 25 miles (40 km) long and up to 6 miles (9.7 km) wide and receives drainage from Tustumena Glacier, and several creeks.| The outlet forms the headwaters of the Kasilof River. 25 miles (40 km) 6 miles (9.7 km) Kenai Peninsula, Alaska 
