Loutsis Dam

Tr-Snoqualmie Ri· King, Washington· Built 1970· Earth·
Low Hazard Irrigation Recreation Private

Key Takeaway

Loutsis Dam is classified as low hazard in Washington. It was completed in 1970 and is 56 years old. Its primary use is irrigation.

Physical Details

Dam Length395 ft
Dam TypeEarth
Max Storage138 acre-ft
Normal Storage97 acre-ft
Surface Area97 acres
Drainage Area1 sq mi
Max Discharge97 cfs
Year Completed1970 (56 years old)
NID IDWA00187

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
Last Inspection: January 6, 2000
State Regulated: Yes
Regulatory Agency: Washington Dept of Ecology

Ownership

Chris & CarolineLoutsis

Private

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Frequently Asked Questions

What is the hazard classification of Loutsis Dam?

Loutsis Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Loutsis Dam?

Loutsis Dam is owned by Chris & CarolineLoutsis (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Loutsis Dam built?

Loutsis Dam was completed in 1970, making it 56 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of Loutsis Dam?

Loutsis Dam serves the following purposes: Irrigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

When was Loutsis Dam last inspected?

Loutsis Dam was last inspected on January 6, 2000. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.