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Dam - Wikipedia, the free encyclopedia (2374 words) |
 | Rock-fill dams are embankments of loose rock with either a watertight upstream face of concrete slabs or timber or a watertight core. |
 | Earth dams, also called earthen and earth-fill dams, are constructed as a simple homogeneous embankment of well-compacted earth, sometimes with a watertight concrete or clay core or upstream face, or sometimes with a hydraulic fill to produce a watertight core. |
 | A type of temporary earth dam occasionally used in high latitudes is the frozen-core dam, in which a coolant is circulated through pipes inside the dam to maintain a watertight region of permafrost within it. |
| Parker Dam - Wikipedia, the free encyclopedia (278 words) |
 | Parker Dam is a concrete gravity-arch dam which spans the Colorado river, at a point 155 miles (250 km) downstream of Hoover Dam. |
 | The dam's primary functions are to act as a reservoir, and to generate hydroelectric power. |
 | The aqueduct is operated by the Metropolitan Water District of Southern California, which supplies water to almost all cities in the greater Los Angeles and San Diego areas. |