Columbia Encyclopedia

(Encyclopedia) Mystic. 1 River, c.10 mi (16 km) long, rising in SE Conn. and flowing S past Old Mystic and Mystic villages to the Long Island Sound. Mystic Seaport, a maritime museum, is at its mouth. 2 River, c.7 m...

(Encyclopedia) Indio ĭnˈdē-ōˌ [key], city (2020 pop. 89,137), Riverside co., SE Calif., in the Coachella Valley of the Colorado...

(Encyclopedia) turquoise, hydrous phosphate of aluminum and copper, Al2(OH)3PO4·H2O+Cu, used as a gem. It occurs rarely in crystal form, but is usually cryptocrystalline. Turquoise is opaque and has a waxy luster; ...

(Encyclopedia) Long Island (1990 pop. 6,861,454), 1,723 sq mi (4,463 sq km), 118 mi (190 km) long, and from 12 to 20 mi (19–32 km) wide, SE N.Y.; fourth largest island of the United States and the largest outside ...

(Encyclopedia) Red River, Chinese Yuan Chiang, Vietnamese Song Hong, chief river of N Vietnam, 730 mi (1,175 km) long, rising in Yunnan prov., S China, and flowing southeast, in deep, narrow gorges, through N Vietna...

(Encyclopedia) United States Naval Observatory, a federal astronomical observatory, located in Washington, D. C. It evolved from the Navy's oldest scientific institution, the Depot of Charts and Instruments, founded...

(Encyclopedia) reclamation of land, practice of converting land deemed unproductive into arable land by such methods as irrigation, drainage, flood control, altering the texture and mineral and organic content of so...

(Encyclopedia) Park Range, part of the Rocky Mts., central Colo. and S Wyo., extending N from the Colorado River. Mt. Lincoln (14,284 ft/4,354 m) is the highest peak. ...

(Encyclopedia) Delaware River Basin Compact dĕlˈəwâr, –wər [key], providing for the utilization and development of the water resources of the Delaware River basin. In 1961 the federal government and the state...

(Encyclopedia) Navajo Dam, 402 ft (123 m) high and 3,648 ft (1,112 m) long, NW N.Mex., on the San Juan River, near the Colo. line; built 1958–63 by the U.S. Bureau of Reclamation. The dam, a major unit of the Colo...