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Great Dismal Swamp

(Encyclopedia)Great Dismal Swamp, SE Va. and NE N.C. With dense forests and tangled undergrowth, the wetlands are a favorite site for sportsmen and naturalists. It once may have covered nearly 2,200 sq mi (5,700 sq...

Great Rift Valley

(Encyclopedia)Great Rift Valley, geological fault system of SW Asia and E Africa. It extends c.3,000 mi (4,830 km) from N Syria to central Mozambique. The northernmost extension runs S through Syria and Lebanon, th...

Simcoe, Lake

(Encyclopedia)Simcoe, Lake, 539 sq mi (1,396 sq km), S Ont., Canada, between Georgian Bay and Lake Ontario. Cook Bay, Kempenfelt Bay, and Lake Couchiching are arms of the lake. Lake Simcoe drains N through the Seve...

Agassiz, Lake

(Encyclopedia)Agassiz, Lake ăgˈəsē [key], glacial lake of the Pleistocene epoch, c.700 mi (1,130 km) long, 250 mi (400 km) wide, formed by the melting of the continental ice sheet beginning some 14,000 years ag...

Onega, Lake

(Encyclopedia)Onega, Lake, Finnish Aäninen, Rus. Onezhskoye Ozero, lake, c.3,800 sq mi (9,800 sq km), NW European Russia, in Karelia, between Lake Ladoga and the White Sea. The second largest lake in Europe, it is...

Winnipegosis, Lake

(Encyclopedia)Winnipegosis, Lake wĭnˌĭpəgōˈsĭs [key], 2,086 sq mi (5,403 sq km), 125 mi (201 km) long and 25 mi (40 km) wide, W Man., Canada. It is a remnant of glacial Lake Agassiz. It drains SE into Lake M...

Tulare Lake

(Encyclopedia)Tulare Lake, intermittent lake, in the Central Valley, central Calif. The Kings, Kaweah, and Kern rivers at one time flowed into the lake, but their waters have been diverted for irrigation. The land ...

Pyramid Lake

(Encyclopedia)Pyramid Lake, 188 sq mi (487 sq km), W Nev. The lake, a remnant of ancient Lake Lahontan, receives the Truckee River. Visited (1844) by U.S. explorer John Frémont, the lake was named for its large py...

Okeechobee, Lake

(Encyclopedia)Okeechobee, Lake ōˌkēchōˈbē [key], c.700 sq mi (1,810 sq km), SE Fla., N of the Everglades; third largest freshwater lake and fourth largest lake wholly within the United States. It is c.35 mi (...

Constance, Lake

(Encyclopedia)Constance, Lake, Ger. Bodensee, lake, 208 sq mi (539 sq km), bordering on Switzerland, Germany, and Austria. It is 42 mi (68 km) long and has a maximum depth of 827 ft (252 m). The lake is fed and dra...