Mountain Pond Dam

Snake R. - Offstream· Walla Walla, Washington· Built 1992· Earth·
High Hazard Irrigation Private

Key Takeaway

Mountain Pond Dam is classified as high hazard in Washington. It was completed in 1992 and is 34 years old. Its primary use is irrigation. 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 TypeEarth
Max Storage26 acre-ft
Normal Storage22 acre-ft
Surface Area2 acres
Drainage Area0 sq mi
Max Discharge50 cfs
Year Completed1992 (34 years old)
NID IDWA01860

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: December 31, 2023
State Regulated: Yes
Regulatory Agency: Washington Dept of Ecology

Ownership

FirstFruits

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Mountain Pond Dam?

Mountain Pond 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 Mountain Pond Dam?

Mountain Pond Dam is owned by FirstFruits (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mountain Pond Dam built?

Mountain Pond Dam was completed in 1992, making it 34 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 Mountain Pond Dam?

Mountain Pond 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 Mountain Pond Dam last inspected?

Mountain Pond Dam was last inspected on December 31, 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.