City Diversion

City Diversion is a gravity dam located in Bonneville County, Idaho, built in 1982. It carries a Low hazard potential classification and has a satisfactory condition assessment.

About City Diversion

The primary purpose of City Diversion is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by City Of Idaho Falls (local government). It impounds the Snake River near Idaho Falls, Id.

The dam stands 30 feet tall and stretches 1,970 feet across, creates a reservoir covering 50 acres, has a maximum storage capacity of 1,200 acre-feet, and collects water from a drainage area of 9,800 square miles. Completed in 1982, the structure is 44 years old.

This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 09/28/2017.

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Low HazardSatisfactory ConditionEmergency Action Plan: Not Required

Location

StateIdaho
CountyBonneville
Nearest CityIdaho Falls, Id
River/StreamSnake River
Coordinates43.49560, -112.04330

Physical Characteristics

Dam TypeGravity
NID Height30 ft
Dam Height30 ft
Dam Length1,970 ft
Year Completed1982 (44 years old)

Storage & Hydraulics

NID Storage1,200 acre-ft
Max Storage1,200 acre-ft
Normal Storage400 acre-ft
Surface Area50 acres
Drainage Area9,800 sq mi
Max Discharge75,000 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeHydroelectric
OwnerCity of Idaho Falls
Owner TypeLocal Government
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection09/28/2017
Emergency Action PlanNot Required

Identifiers

NID IDID00432
Federal IDID00432
More InfoState Dam Safety Program

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