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Maricopa

(Encyclopedia) MaricopaMaricopamärĭkōˈpə, mâr– [key], Native North Americans whose language belongs to the Yuman branch of the Hokan-Siouan linguistic stock (see Native American languages). At some…

Coolidge Dam

(Encyclopedia) Coolidge Dam, 249 ft (76 m) high, 920 ft (280 m) long, on the Gila River, SE Ariz.; built 1927–28. It irrigates c.100,000 acres (40,470 hectares), half of which are Native American…

Pima

(Encyclopedia) PimaPimapēˈmə [key], Native North American tribe of S Arizona. They speak the Pima language of the Uto-Aztecan branch of the Aztec-Tanoan linguistic family (see Native American…

Salt River valley

(Encyclopedia) Salt River valley, irrigated region around the lower course of the Salt River, which rises in mountain streams near the Mogollon Rim of the Mogollon Plateau and flows southwest to join…

Hohokam

(Encyclopedia) HohokamHohokamhōˈhōkămˌ, hōhōˈkəm [key], term denoting the culture of the ancient agricultural populations inhabiting the Salt and Gila river valleys of S Arizona (a.d. 300–1200). They…

Yuma, city, United States

(Encyclopedia) YumaYumay&oomacr;ˈ mə [key], city (1990 pop. 54,923), seat of Yuma co., extreme SW Ariz., on the eastern bank of the Colorado River near the confluence of the Gila River; founded…

Gila

(Encyclopedia) GilaGilahēˈlə [key], river, 630 mi (1,014 km) long, rising in the mountains of W N.Mex. and flowing W across Ariz. to the Colorado River at Yuma, Ariz.; the San Francisco River is its…

America's Ten Most Endangered Rivers, 2008

Each year the organization American Rivers analyzes the condition of the nation's rivers to determine which are the most “endangered.” Threats to these rivers include dams and channelizations that…

Most Populous Indian Reservations, 2000

Below is a list of Indian Reservations in the United States with the largest populations. As of October 2011, the 2010 U.S. Census data has not been published. /**/…