Tri Mountain Estates Dam

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateWashington
CountyClark
Nearest CityLa Center
River/StreamTr-Mason Creek
Coordinates45.87569, -122.58137

Physical Characteristics

Dam TypeEarth
NID Height32 ft
Dam Length1,355 ft
Year Completed1953 (73 years old)

Storage & Hydraulics

NID Storage177 acre-ft
Max Storage177 acre-ft
Normal Storage137 acre-ft
Surface Area18 acres
Drainage Area0 sq mi
Max Discharge125 cfs

Ownership & Safety

PurposeIrrigation
OwnerTri-Mountain Estates LLC
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection08/25/2020
Emergency Action PlanYes

Identifiers

NID IDWA00103
Federal IDWA00103
More InfoState Dam Safety Program

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