Mount St. Helens Sediment Retention Structure

High HazardNot Available ConditionEmergency Action Plan: Yes

Location

StateWashington
CountyCowlitz
Nearest CityTOUTLE
River/StreamNO. FORK TOUTLE
Coordinates46.36247, -122.55055

Physical Characteristics

Dam TypeEarth
NID Height239 ft
Dam Height186 ft
Dam Length1,800 ft
Year Completed1988 (38 years old)

Ownership & Safety

PurposeFlood Risk Reduction
OwnerUSACE - Portland District
Owner TypeFederal
Hazard ClassificationHigh
Condition AssessmentNot Available
Last Inspection03/10/2022
Emergency Action PlanYes

Identifiers

NID IDWA00558
Federal IDWA00558
More InfoState Dam Safety Program

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