American Falls Dam

High HazardNot Available ConditionEmergency Action Plan: Yes

Location

StateIdaho
CountyPower
Nearest CityAMERICAN FALLS
River/StreamSNAKE RIVER
Coordinates42.77940, -112.87430

Physical Characteristics

Dam TypeConcrete
NID Height104 ft
Dam Height87 ft
Dam Length5,277 ft
Year Completed1927 (99 years old)

Storage & Hydraulics

NID Storage1,671,300 acre-ft
Max Storage1,671,300 acre-ft
Normal Storage1,671,300 acre-ft
Surface Area58,076 acres
Drainage Area14,559 sq mi
Max Discharge86,750 cfs
Spillway TypeControlled

Ownership & Safety

PurposeFlood Risk Reduction
OwnerBUREAU OF RECLAMATION
Owner TypeFederal
Hazard ClassificationHigh
Condition AssessmentNot Available
Last Inspection04/25/2022
Emergency Action PlanYes

Identifiers

NID IDID00274
Federal IDID00274
More InfoState Dam Safety Program

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