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Morton, William Thomas Green

(Encyclopedia)Morton, William Thomas Green, 1819–68, American dentist and physician, b. Charlton, Mass., studied at Baltimore College of Dental Surgery. He practiced dentistry in Boston, for a time with Horace We...

Grand River, river, Canada

(Encyclopedia)Grand River, c.165 mi (270 km) long, rising in the highlands of the Ontario Peninsula, S Ont., Canada, and flowing S past Kitchener and Brantford, then SE to Lake Erie at Port Maitland. It is navigabl...

Colorado River storage project

(Encyclopedia)Colorado River storage project, a multipurpose plan, undertaken by the U.S. Bureau of Reclamation in 1956, to control the flow of the upper Colorado and its tributaries and to aid in the development o...

Black River

(Encyclopedia)Black River. 1 River rising in SE Mo. and flowing c.300 mi (480 km) SE, then SW to the White River near Newport, Ark. It is partly navigable. Clearwater Dam is on the river near Piedmont, Mo. 2 River ...

White River

(Encyclopedia)White River. 1 River, c.690 mi (1,110 km) long, rising in the Boston Mts., NW Ark., and flowing first N into SW Missouri, then generally SE through NE Arkansas to the Mississippi River. Its chief trib...

New River

(Encyclopedia)New River, c.320 mi (510 km) long, rising in the Blue Ridge, NW N.C. It flows NE through SW Virginia, then NW into West Virginia where it joins with the Gauley River to form the Kanawha River. It is u...

Rock River

(Encyclopedia)Rock River, c.285 mi (460 km) long, rising in SE Wis. and flowing SW through NW Ill. to the Mississippi River near Rock Island. It flows through a fertile farm area. Rockford, Ill., is the chief city ...

East River

(Encyclopedia)East River, tidal strait, 16 mi (26 km) long and 600–4,000 ft (183–1,219 m) wide, connecting Upper New York Bay and Long Island Sound, New York City, and separating the boroughs of Manhattan and t...

Orange River

(Encyclopedia)Orange River, chief river of S Africa, c.1,300 mi (2,090 km) long, rising in the Maluti Mts., N Lesotho. It flows SW through Lesotho, then meanders northwest and west through central South Africa, for...

Dead River

(Encyclopedia)Dead River, 45 mi (72 km) long, rising on the Canadian border, NW Maine, and flowing northeast through a hunting and fishing region to the Kennebec River. Long Falls Dam, on the Dead River, generates ...