Location

Arrowrock Reservoir and Dam (ARK)

Arrowrock Dam is a concrete thick-arch structure 350 feet high. The dam and reservoir are on the Boise River approximately 42 miles downstream of Anderson Ranch Dam and 22 miles upstream from Boise, Idaho. When constructed in 1915, the dam was recorded as being the tallest concrete dam in the world. Columbia Basin Teletype (CBTT) = ARK.
Location Tags Boise River, Arrowrock Reservoir, Arrowrock Dam
Location Parent
State(s) Idaho
Unified Region(s) Columbia-Pacific Northwest
Reclamation Region(s) (Legacy) Pacific Northwest
Timezone MT
Elevation 3,216 ft
Vertical Datum NGVD29
Coordinates (lat, long) (43.5952, -115.923)
Horizontal Datum WGS84
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