Woods Reservoir Dam

Tr-False Bay· San Juan, Washington· Built 1972· Earth·
Low Hazard Irrigation Private

Key Takeaway

Woods Reservoir Dam is classified as low hazard in Washington. It was completed in 1972 and is 54 years old. Its primary use is irrigation.

Physical Details

Dam TypeEarth
Max Storage245 acre-ft
Normal Storage210 acre-ft
Surface Area26 acres
Drainage Area0 sq mi
Max Discharge255 cfs
Year Completed1972 (54 years old)
NID IDWA00126

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: Yes
Last Inspection: November 13, 2011
State Regulated: Yes
Regulatory Agency: Washington Dept of Ecology

Ownership

Blacktail Bass & Beef LLC

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Woods Reservoir Dam?

Woods Reservoir 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 Woods Reservoir Dam?

Woods Reservoir Dam is owned by Blacktail Bass & Beef LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Woods Reservoir Dam built?

Woods Reservoir Dam was completed in 1972, making it 54 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 Woods Reservoir Dam?

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

When was Woods Reservoir Dam last inspected?

Woods Reservoir Dam was last inspected on November 13, 2011. 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.