Loutsis Dam

Loutsis Dam is an earth dam located in King County, Washington, built in 1970. It carries a Low hazard potential classification and has a satisfactory condition assessment.

About Loutsis Dam

The primary purpose of Loutsis Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Chris & Carolineloutsis (private). It impounds the Tr-snoqualmie Ri near Duvall.

The dam stands 22 feet tall and stretches 395 feet across, creates a reservoir covering 97 acres, has a maximum storage capacity of 138 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1970, the structure is well into its service life at over 50 years old.

This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 01/06/2000. That was over 26 years ago.

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Low HazardSatisfactory ConditionEmergency Action Plan: Not Required

Location

StateWashington
CountyKing
Nearest CityDuvall
River/StreamTr-snoqualmie Ri
Coordinates47.72199, -121.97948

Physical Characteristics

Dam TypeEarth
NID Height22 ft
Dam Length395 ft
Year Completed1970 (56 years old)

Storage & Hydraulics

NID Storage138 acre-ft
Max Storage138 acre-ft
Normal Storage97 acre-ft
Surface Area97 acres
Drainage Area0 sq mi
Max Discharge97 cfs

Ownership & Safety

PurposeIrrigation
OwnerChris & CarolineLoutsis
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection01/06/2000
Emergency Action PlanNot Required

Identifiers

NID IDWA00187
Federal IDWA00187
More InfoState Dam Safety Program

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