Columbia Encyclopedia

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Arrow Lakes

(Encyclopedia)Arrow Lakes, two expansions of the Columbia River, S British Columbia, Canada. Both lie in narrow valleys bounded by mountain ranges and are noted for their beauty. Upper Arrow Lake has an area of 88 ...

Ohio and Erie Canal

(Encyclopedia)Ohio and Erie Canal, former waterway of Ohio, 307 mi (494 km) long, between Lake Erie at Cleveland and the Ohio River at Portsmouth; built 1825–32. It utilized part of the courses of the Cuyahoga, M...

Billings

(Encyclopedia)Billings, city (2020 pop. 117,116), seat of Yellowstone co., S Mont., on the Yellowstone River, in a valley surrounded by seven mountain ranges; inc. as...

Blackstone River Valley National Historical Park

(Encyclopedia)Blackstone River Valley National Historical Park: see National Parks and Monuments (table). ...

Jemison, Mary

(Encyclopedia)Jemison, Mary, 1743–1833, American frontierswoman. She was born at sea while her parents were en route from Ireland to America. In W Pennsylvania she was captured (1758) by a French and Indian War p...

Shasta Dam

(Encyclopedia)Shasta Dam, 602 ft (183 m) high and 3,460 ft (1,055 m) long, on the Sacramento River, N Calif.; built 1938–45. One of the largest concrete dams in the world, it is a major unit in the Central Valley...

earth, in geology and astronomy

(Encyclopedia)CE5 A. Cross section of the earth, showing its shells B. Detailed cross section of the crust and upper mantle: The lithosphere consists of the hard rock in the crust and upper mantle, lying above t...

Siebengebirge

(Encyclopedia)Siebengebirge zēˈbəngəbĭrˌgə [key] [Ger.,=seven mountains], small wooded range of the Rhenish Slate Mts., W Germany. Of volcanic origin, it extends for c.10 mi (16 km) S of Bonn along the Rhine...

Galicia, historic region, Poland and Ukraine

(Encyclopedia)Galicia gəlĭˈshə, –shēə, –ə [key], Pol. Galicja, Ukr. Halychyna, Rus. Galitsiya, historic region (32,332 sq mi/83,740 sq km), SE Poland and W Ukraine, covering the slopes of the N Carpathia...

Churchill, rivers, Canada

(Encyclopedia)Churchill. 1 River, c.600 mi (970 km) long, issuing as the Ashuanipi River from Ashuanipi Lake, SW Labrador, N.L., Canada, and flowing in an arc north, then southeast through a series of lakes to Chur...