Cow Palace Lagoon 1

Offstream· Yakima, Washington· Built 2000· Earth·
Significant Hazard Other Private

Key Takeaway

Cow Palace Lagoon 1 is classified as significant hazard in Washington. It was completed in 2000 and is 26 years old. Its primary use is other. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Length1,470 ft
Dam TypeEarth
Max Storage48 acre-ft
Normal Storage38 acre-ft
Surface Area3 acres
Drainage Area0 sq mi
Max Discharge7 cfs
Year Completed2000 (26 years old)
Year Modified2019
NID IDWA02023

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

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

Emergency Action Plan: Yes
Last Inspection: September 5, 2023
State Regulated: Yes
Regulatory Agency: Washington Dept of Ecology

Ownership

Cow Palace, LLC

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Cow Palace Lagoon 1?

Cow Palace Lagoon 1 is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Cow Palace Lagoon 1?

Cow Palace Lagoon 1 is owned by Cow Palace, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Cow Palace Lagoon 1 built?

Cow Palace Lagoon 1 was completed in 2000, making it 26 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 Cow Palace Lagoon 1?

Cow Palace Lagoon 1 serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

When was Cow Palace Lagoon 1 last inspected?

Cow Palace Lagoon 1 was last inspected on September 5, 2023. 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.