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Puget Sound

(Encyclopedia)Puget Sound pyo͞oˈjĕt [key], arm of the Pacific Ocean, NW Wash., connected with the Pacific by Juan de Fuca Strait, entered through the Admiralty Inlet and extending in two arms c.100 mi (160 km) S...

Crater Lake National Park

(Encyclopedia)Crater Lake National Park, 183,224 acres (74,206 hectares), SW Oreg., in the Cascade Range; est. 1902. Crater Lake, 20 sq mi (52 sq km), lies in a huge pit that was created when the top of a prehistor...

Klamath, mountain range, United States

(Encyclopedia)Klamath, mountain range, part of Pacific Coast Ranges extending c.240 mi (368 km) from SW Oregon to NW California. The Klamath Mts. are part of numerous national forest and wildlife preserves and cont...

Sierra Nevada, mountain range, Spain

(Encyclopedia)Sierra Nevada syāˈrä nāväˈᵺä [key], chief mountain range of S Spain, in Granada prov., running from east to west for c.60 mi (100 km), parallel to the Mediterranean Sea. The range's highest p...

Saint Helens, Mount

(Encyclopedia)Saint Helens, Mount, volcanic peak, 8,363 ft (2,549 m; 9,677 ft/2,950 m before its 1980 eruption) high, SW Wash., historically the most active volcano in the Cascade Range. Dormant since 1857, Mt. St....

Jura, mountain range, France and Switzerland

(Encyclopedia)Jura jo͝orˈə, Fr. zhüräˈ, Ger. yo͞oˈrä [key], mountain range, part of the Alpine system, E France and NW Switzerland, occupying parts of the French region of Franche-Comté and the Swiss cant...

Sierra Nevada, mountain range, United States

(Encyclopedia)Sierra Nevada sēĕrˈə nəväˈdə [key], mountain range, c.400 mi (640 km) long and from c.40 to 80 mi (60–130 km) wide, mostly in E Calif. It rises to 14,495 ft (4,418 m) in Mt. Whitney, the hig...

Elyria

(Encyclopedia)Elyria ēlērˈēə [key], city (2020 pop. 52,656), seat of Lorain co., N Ohio, on the Black ...

Boise project

(Encyclopedia)Boise project, in the Boise, Payette, and Snake river valleys, SW Idaho and E Oregon; developed in 1905 by the U.S. Bureau of Reclamation for irrigation, hydroelectricity, flood control, and recreatio...

Bonneville Dam

(Encyclopedia)Bonneville Dam bŏnˈəvĭl [key], one of the major dams on the Columbia River where it passes through the Cascade Mts., between Oregon and Wash. The dam, 2,690 ft (820 m) long and 197 ft (60 m) high,...