Soda Springs

Soda Springs is an arch dam located in Douglas County, Oregon, built in 1952. It carries a High hazard potential classification and has a fair condition assessment.

About Soda Springs

The primary purpose of Soda Springs 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 Pacificorp (private). It impounds the North Umpqua River near Idleyld Park, Or.

The dam stands 127 feet tall and stretches 340 feet across, creates a reservoir covering 32 acres, has a maximum storage capacity of 512 acre-feet, and collects water from a drainage area of 438 square miles. Completed in 1952, the structure is well into its service life at over 50 years old.

This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 05/11/2022.

At 127 feet, this dam is taller than 98% of all dams in the United States.

Living Downstream

If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Oregon dam safety program can provide more specific information about emergency planning for this structure.

Search for dams near your address to see all dams in your area with hazard classifications and safety data.

High HazardFair ConditionEmergency Action Plan: Yes

Location

StateOregon
CountyDouglas
Nearest CityIdleyld Park, Or
River/StreamNorth Umpqua River
Coordinates43.30286, -122.49474

Physical Characteristics

Dam TypeArch
NID Height127 ft
Dam Height125 ft
Dam Length340.6 ft
Year Completed1952 (74 years old)

Storage & Hydraulics

NID Storage512 acre-ft
Max Storage512 acre-ft
Normal Storage412 acre-ft
Surface Area32 acres
Drainage Area438 sq mi
Max Discharge17,500 cfs
Spillway TypeControlled

Ownership & Safety

PurposeHydroelectric
OwnerPacifiCorp
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentFair
Last Inspection05/11/2022
Emergency Action PlanYes

Identifiers

NID IDOR00555
Federal IDOR00555
More InfoState Dam Safety Program

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