Faraday Diversion

Faraday Diversion is a gravity dam located in Clackamas County, Oregon, built in 1965. It carries a Significant hazard potential classification and has a satisfactory condition assessment.

About Faraday Diversion

The primary purpose of Faraday 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 Portland General Electric Company (private). It impounds the Clackamas River near Estacada, Or.

The dam stands 84 feet tall and stretches 407 feet across, creates a reservoir covering 70 acres, has a maximum storage capacity of 1,200 acre-feet, and collects water from a drainage area of 671 square miles. Completed in 1965, the structure is well into its service life at over 50 years old.

This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 09/20/2022.

At 84 feet, this dam is taller than 97% of all dams in the United States.

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Significant HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateOregon
CountyClackamas
Nearest CityEstacada, Or
River/StreamClackamas River
Coordinates45.25190, -122.29860

Physical Characteristics

Dam TypeGravity
NID Height84 ft
Dam Height55 ft
Dam Length407 ft
Year Completed1965 (61 years old)

Storage & Hydraulics

NID Storage1,200 acre-ft
Max Storage1,200 acre-ft
Normal Storage1,200 acre-ft
Surface Area70 acres
Drainage Area671 sq mi
Max Discharge177,000 cfs
Spillway TypeControlled

Ownership & Safety

PurposeHydroelectric
OwnerPortland General Electric Company
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentSatisfactory
Last Inspection09/20/2022
Emergency Action PlanYes

Identifiers

NID IDOR00551
Federal IDOR00551
More InfoState Dam Safety Program

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