Lostine Reservoir

Lostine Reservoir is an earth dam located in Wallowa County, Oregon, built in 1970. It carries a Low hazard potential classification.

About Lostine Reservoir

The primary purpose of Lostine Reservoir is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Bruce Strathearn (private). It impounds the Lostine River near Lostline.

The dam stands 14 feet tall and stretches 4,900 feet across, creates a reservoir covering 90 acres, has a maximum storage capacity of 540 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1970, 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 04/27/2018.

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Low HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateOregon
CountyWallowa
Nearest CityLostline
River/StreamLostine River
Coordinates45.43703, -117.42529

Physical Characteristics

Dam TypeEarth
NID Height14 ft
Dam Height14 ft
Dam Length4,900 ft
Year Completed1970 (56 years old)

Storage & Hydraulics

NID Storage540 acre-ft
Max Storage540 acre-ft
Normal Storage540 acre-ft
Surface Area90 acres
Drainage Area0 sq mi
Max Discharge29 cfs

Ownership & Safety

PurposeRecreation
OwnerBRUCE STRATHEARN
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentNot Rated
Last Inspection04/27/2018
Emergency Action PlanNot Required

Identifiers

NID IDOR00499
Federal IDOR00499
More InfoState Dam Safety Program

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