Southwest Genesee Street Detention Dam

High HazardFair ConditionEmergency Action Plan: Yes

Location

StateWashington
CountyKing
Nearest CityWithin Seattle City Limits
River/StreamLongfellow Creek
Coordinates47.56488, -122.36751

Physical Characteristics

Dam TypeEarth
NID Height27 ft
Dam Length230 ft
Year Completed1974 (52 years old)

Storage & Hydraulics

NID Storage52 acre-ft
Max Storage52 acre-ft
Normal Storage19 acre-ft
Surface Area16 acres
Drainage Area3 sq mi
Max Discharge240 cfs

Ownership & Safety

PurposeFlood Risk Reduction
OwnerSeattle Public Utilities
Owner TypePublic Utility
Hazard ClassificationHigh
Condition AssessmentFair
Last Inspection09/09/2020
Emergency Action PlanYes

Identifiers

NID IDWA00380
Federal IDWA00380
More InfoState Dam Safety Program

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