Seasonal road closures in effect
Seasonal road closures are in effect for motorized vehicles. The Teton Park Road is closed from the Taggart Lake Trailhead to the Signal Mountain Lodge. The Moose-Wilson Road is closed from the Granite Canyon Trailhead to the Death Canyon Road. More »
Avalanche hazards exist in the park
Avalanche hazards exist in the park, especially in mountain canyons and on exposed slopes. A daily avalanche forecast can be found at www:jhavalanche.org or by calling (307) 733-2664. More »
Lakes and Ponds
Glaciers carved most of the lakes in the park thousands of years ago. As the glaciers moved they gouged out the valley floor. When the glaciers melted they left behind a depression in the ground that filled with water from melting glacial ice. These depressions became the lakes that we see today. Jackson Lake, the park's largest lake, is a natural lake raised by a 39-foot tall man-made dam.
Ponds and lakes provide a variety of habitat in and around them. From cutthroat trout to crawfish, from great blue herons to moose, almost all wildlife in the park derive some benefit from lakes and ponds. Ponds and lakes also provide recreational opportunities for visitors. Some of the easiest and most popular hikes are around small lakes and ponds. All of the lakes are open to swimming and non-motorized boating. Jackson Lake also allows motorized boats for recreational use.
Did You Know?
Did you know that Grand Teton National Park was established in both 1929 and 1950? The original 1929 park protected the mountain peaks and the lakes near the base. The boundaries were later expanded in 1950 to include much of the adjacent valley floor.