Location

Island Park Reservoir and Dam (ISL)

Island Park Dam is located 38 miles north of Ashton, Idaho, on Henrys Fork. The dam is a zoned earthfill structure and was constructed from 1937 to 1939. Water stored at Island Park Reservoir is used in Fremont and Madison Counties in northeastern Idaho. Columbia Basin Teletype (CBTT) = ISL.
Location Tags Island Park Reservoir, Island Park Dam
Location Parent
State(s) Idaho
Unified Region(s) Columbia-Pacific Northwest
Reclamation Region(s) (Legacy) Pacific Northwest
Timezone MT
Elevation 6,318 ft
Vertical Datum NAVD88
Coordinates (lat, long) (44.41893154, -111.3984276)
Horizontal Datum WGS84
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Related Locations

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