Talus P5 Stormwater Detention Dam

Offstream - Tibbets Cr.· King, Washington· Built 2002· Earth·
High Hazard Flood Risk Reduction Private

Key Takeaway

Talus P5 Stormwater Detention Dam is classified as high hazard in Washington. It was completed in 2002 and is 24 years old. Its primary use is flood risk reduction. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Length400 ft
Dam TypeEarth
Max Storage12 acre-ft
Normal Storage1 acre-ft
Surface Area1 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed2002 (24 years old)
Year Modified2002
NID IDWA01844

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

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

Emergency Action Plan: Yes
Last Inspection: September 27, 2023
State Regulated: Yes
Regulatory Agency: Washington Dept of Ecology

Ownership

Issaquah City

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Talus P5 Stormwater Detention Dam?

Talus P5 Stormwater Detention Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Talus P5 Stormwater Detention Dam?

Talus P5 Stormwater Detention Dam is owned by Issaquah City (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Talus P5 Stormwater Detention Dam built?

Talus P5 Stormwater Detention Dam was completed in 2002, making it 24 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 Talus P5 Stormwater Detention Dam?

Talus P5 Stormwater Detention Dam serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

When was Talus P5 Stormwater Detention Dam last inspected?

Talus P5 Stormwater Detention Dam was last inspected on September 27, 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.