Lake Herbert G. West

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Lake Herbert G. West
Location Washington
Coordinates 46°34′36″N 118°29′58″W / 46.5767, -118.4994Coordinates: 46°34′36″N 118°29′58″W / 46.5767, -118.4994
Lake type reservoir
Primary inflows Snake River
Primary outflows Snake River
Basin countries United States
Surface area 6,590 acres (27 km²)
Water volume 0.465 km³

Lake Herbert G. West (or Lake West) is a reservoir formed by the Lower Monumental Dam. It extends up the Snake River for 28 miles (45 km) to the tailwater of Little Goose Dam. It has a surface area of 6,590 acres (27 km²), a maximum storage capacity of 432,000 acre-feet (0.53 km³), normally kept at 377,000 acre-feet (0.465 km³).

As the reservoir filled in 1968, it flooded several archaeological sites, including the Marmes Rockshelter, which contained the oldest known artifacts in Washington, dating back over 10,000 years.

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