Lake Pend Oreille is a lake in the northern Idaho Panhandle, with a surface area of 148 square miles (380 km2). It is 65 miles (105 km) long, and 1,150 feet (350 m) deep in some regions, making it the fifth deepest in the United States. It is fed by the Clark Fork River and the Pack River, and drains via the Pend Oreille River. It is surrounded by national forests and a few small towns, with the largest population on the lake at Sandpoint. All but the southern tip of the lake is in Bonner County. The southern tip is in Kootenai County and is home to Farragut State Park, formerly the Farragut Naval Training Station during World War II.