Clark Lake

Clark Lake is an earth dam located in Wheeler County, Oregon, built in 1971. It carries a Low hazard potential classification.

Hazard potentialLowFailure would cause limited damage
ConditionNot assessed
Emergency action planNot reported
Last inspection08/27/2019
Height15 ft
Built197155 years ago

Dam profile

NID height · 15 ft
15 FT TWO-STORY HOUSEMEDIAN U.S. DAM · 24 FT

15 ft tall and 500 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.

About Clark Lake

The primary purpose of Clark Lake is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Kinzua Lodge, LLC C/o George Tarnasky (private). It impounds the Lake Creek near Service Creek.

The dam stands 15 feet tall and stretches 500 feet across, creates a reservoir covering 5,700 acres, has a maximum storage capacity of 89 acre-feet, and collects water from a drainage area of 9 square miles. Completed in 1971, 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 08/27/2019.

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Location

StateOregon
CountyWheeler
Nearest CityService Creek
River/StreamLake Creek
Coordinates44.89087, -119.97788

Physical Characteristics

Dam TypeEarth
NID Height15 ft
Dam Height15 ft
Dam Length500 ft
Year Completed1971 (55 years old)

Storage & Hydraulics

NID Storage89 acre-ft
Max Storage89 acre-ft
Normal Storage89 acre-ft
Surface Area5,700 acres
Drainage Area9 sq mi
Max Discharge67 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeRecreation
OwnerKinzua Lodge, LLC C/o George Tarnasky
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentNot assessed
Last Inspection08/27/2019
Emergency Action PlanNot Required

Identifiers

NID IDOR00512
Federal IDOR00512
More InfoState Dam Safety Program