Simplot Feeders Waste Pond No1

Columbia River-Offstream· Walla Walla, Washington· Built 1973· Earth·
Significant Hazard Other Private

Key Takeaway

Simplot Feeders Waste Pond No1 is classified as significant hazard in Washington. It was completed in 1973 and is 53 years old. Its primary use is other. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Length1,130 ft
Dam TypeEarth
Max Storage270 acre-ft
Normal Storage75 acre-ft
Surface Area2 acres
Drainage Area55 sq mi
Max Discharge0 cfs
Year Completed1973 (53 years old)
NID IDWA00408

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: December 30, 2023
State Regulated: Yes
Regulatory Agency: Washington Dept of Ecology

Ownership

Simplot Feeders LLC

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Simplot Feeders Waste Pond No1?

Simplot Feeders Waste Pond No1 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 Simplot Feeders Waste Pond No1?

Simplot Feeders Waste Pond No1 is owned by Simplot Feeders LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Simplot Feeders Waste Pond No1 built?

Simplot Feeders Waste Pond No1 was completed in 1973, making it 53 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 Simplot Feeders Waste Pond No1?

Simplot Feeders Waste Pond No1 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 Simplot Feeders Waste Pond No1 last inspected?

Simplot Feeders Waste Pond No1 was last inspected on December 30, 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.