Yellowstone Lake

Yellowstone Lake
Yellowstone Lake as seen from space
Yellowstone Lake Show map of Wyoming Yellowstone Lake Show map of the United States
Location	Yellowstone National Park Teton County, Wyoming, U.S.
Coordinates	44°28′N 110°22′W / 44.467°N 110.367°W / 44.467; -110.367
Primary inflows	Yellowstone River
Primary outflows	Yellowstone River
Basin countries	U.S.
Max. length	20 mi (32 km)
Max. width	15 mi (24 km)
Surface area	136 sq mi (350 km2)
Average depth	139 ft (42 m)
Max. depth	394 ft (120 m)
Shore length1	110 mi (180 km)
Surface elevation	7,732 ft (2,357 m)
Islands	6
1 Shore length is not a well-defined measure.

Yellowstone Lake is the largest body of water in Yellowstone National Park. The lake is 7,732 feet (2,357 m) above sea level and covers 136 square miles (350 km²) with 110 miles (180 km) of shoreline. While the average depth of the lake is 139 ft (42 m), its greatest depth is at least 394 ft (120 m).^[1] Yellowstone Lake is the largest freshwater lake above 7,000 ft (2,100 m) in North America.^[2]

In winter, ice nearly 3 ft (0.91 m) thick covers much of the lake except where shallow water covers hot springs. The lake freezes over by early December and can remain frozen until late May or early June.