There are at least 67 named lakes and reservoirs in Lewis and Clark County, Montana .
A lake is an area filled with water, localized in a basin, that is surrounded by land, apart from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, and therefore are distinct from lagoons, and are also larger and deeper than ponds, though there are no official or scientific definitions. Lakes can be contrasted with rivers or streams, which are usually flowing. Most lakes are fed and drained by rivers and streams.
A reservoir is, most commonly, an enlarged natural or artificial lake, pond or impoundment created using a dam or lock to store water.
Lewis and Clark County is a county located in the U.S. state of Montana. As of the 2010 United States Census, the population was 63,395. Its county seat is Helena, the state capital. The numerical designation for Lewis and Clark County is 5. The county was established in 1865 as Edgerton County, and was renamed "Lewis and Clark County" two years later. The present name was given in honor of explorers Lewis and Clark.
Bighorn Lake is a reservoir behind Yellowtail Dam within the Bighorn Canyon National Recreation Area, located in southern Montana and northern Wyoming.
Connors Lake is a lake in Sawyer County, Wisconsin, United States. It is located in the Flambeau River State Forest. The lake covers an area of 429 acres (1.74 km2) and reaches a maximum depth of 82 ft (25 m). Fish species enzootic to Connors Lake include bluegill, largemouth bass, muskellunge, smallmouth bass, and walleye.
Gates Lake, also known as Birken Lake, Tenass Lake, Halfway Lake, and Summit Lake, is a small lake located at the summit of the Pemberton Portage area of the one-time Lakes Route through the Coast Mountains, located at the summit of a low pass connecting the Upper and Lower Lillooet Country of the Southern Interior of British Columbia. Birken Lake sits at the divide between the Birkenhead and Gates-Seton drainage, known as the Pemberton Pass or Mosquito Pass, and is part of the Gates River drainage.
Canyon Ferry Lake is a reservoir on the Missouri River near Helena, Montana and Townsend, Montana. It is Montana's third largest body of water, covering 35,181 acres (142 km²) and 76 miles (122 km) of shore (1). It was formed by the building of Canyon Ferry Dam, which was completed in 1954 and has been used for electricity, irrigation, and flood controls since.
Gibson Reservoir is located just south of the Bob Marshall Wilderness in Montana. The reservoir is formed by the concrete arch Gibson Dam and backs water up between a hilly pass for about 3 miles. The water in the dam is initially provided by spring snow runoff and carried there via the North Fork Sun River and the South Fork Sun River right after the two join. The reservoir is mainly used for irrigation control.
Lake Helena is a body of water along Prickly Pear Creek in the Helena Valley of Lewis and Clark County in southwestern Montana. It is 2,073 acres (8 km2) in size and is 3,647 ft (1,112 m) above sea level.
There are at least 120 named waterfalls in Montana. A waterfall is a place where flowing water rapidly drops in elevation as it flows over a steep region or a cliff. Waterfalls are most commonly formed when a river is young.