Siltcoos Lake

Siltcoos Lake is a gravity dam located in Lane County, Oregon, built in 1964. It carries a Low hazard potential classification.

About Siltcoos Lake

Siltcoos Lake is a dam in Lane, Oregon. The dam is owned by Industrial Harbor Usa (private). It impounds the Siltcoos River near No Downstream Settlement.

The dam stands 14 feet tall and stretches 130 feet across, creates a reservoir covering 3,585 acres, has a maximum storage capacity of 15,070 acre-feet, and collects water from a drainage area of 50 square miles. Completed in 1964, the structure is well into its service life at over 50 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. The most recent inspection on record was 09/17/2018.

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Low HazardNot Rated ConditionEmergency Action Plan: No

Location

StateOregon
CountyLane
Nearest CityNo Downstream Settlement
River/StreamSiltcoos River
Coordinates43.88024, -124.13255

Physical Characteristics

Dam TypeGravity
NID Height14 ft
Dam Height12 ft
Dam Length130 ft
Year Completed1964 (62 years old)

Storage & Hydraulics

NID Storage15,070 acre-ft
Max Storage15,070 acre-ft
Normal Storage15,070 acre-ft
Surface Area3,585 acres
Drainage Area50 sq mi
Max Discharge10,000 cfs

Ownership & Safety

PurposeOther
OwnerINDUSTRIAL HARBOR USA
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentNot Rated
Last Inspection09/17/2018
Emergency Action PlanNo

Identifiers

NID IDOR00358
Federal IDOR00358
More InfoState Dam Safety Program

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