Youngs Lake Cascades Dam

Significant HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateWashington
CountyKing
River/StreamTr-Cedar River
Coordinates47.41957, -122.10876

Physical Characteristics

Dam TypeEarth
NID Height16 ft
Dam Length1,425 ft
Year Completed1950 (76 years old)

Storage & Hydraulics

NID Storage35,450 acre-ft
Max Storage35,450 acre-ft
Normal Storage33,760 acre-ft
Surface Area690 acres
Drainage Area2 sq mi

Ownership & Safety

PurposeWater Supply
OwnerSeattle Public Utilities
Owner TypeLocal Government
Hazard ClassificationSignificant
Condition AssessmentSatisfactory
Last Inspection06/02/2024
Emergency Action PlanYes

Identifiers

NID IDWA00209
Federal IDWA00209
More InfoState Dam Safety Program

Nearby Dams

Youngs Lake New Inlet Dam 0.3 mi High Youngs Lake Outlet Dam 1.4 mi High Madsen Creek West Basin Dam 3.2 mi High Cedar Hills Landfill Csw Pond 3.8 mi Significant Garrison Creek Stormwater Detention Dam 4.5 mi Significant Springwood Stormwater Detention Dam 4.9 mi High Garrison Creek 98th Avenue Detention D 5.0 mi High Upper Mill Creek Stormwater Detention Da 5.9 mi High Mill Creek Canyon Stormwater Detention D 6.0 mi High Sawyer Lake Outlet Structure 6.5 mi Low