Regulating Basin South Dam

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateWashington
CountyKing
Nearest CityCarnation
River/StreamNorth & South Fork Tolt River
Coordinates47.70060, -121.78270

Physical Characteristics

Dam TypeEarth
NID Height35 ft
Dam Height35 ft
Dam Length250 ft
Year Completed1962 (64 years old)

Storage & Hydraulics

NID Storage882 acre-ft
Max Storage882 acre-ft
Normal Storage1 acre-ft
Drainage Area250 sq mi

Ownership & Safety

PurposeWater Supply
OwnerCity of Seattle
Owner TypeLocal Government
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection09/28/2022
Emergency Action PlanYes

Identifiers

NID IDWA00238
Federal IDWA00238S001
More InfoState Dam Safety Program

Nearby Dams

Tolt River - South Fork 4.4 mi High Marcel Lake Dam 6.3 mi High Margaret Lake Dam 7.2 mi High Dagger Lake Dam 7.9 mi Low Kayak Lake Dam 8.9 mi High Loutsis Dam 9.3 mi Low Redmond Ridge East Srs 1 Pond No 1 10.6 mi High Redmond Ridge East Pond Srn 2 No 1 10.9 mi High Aldarra Pond Dfr1 11.2 mi Low Snoqualmie Falls 11.3 mi Low