Coffin Sheep Dam No 3

Four Mile Creek· Benton, Washington· Built 1938· Earth·
Low Hazard Irrigation Private

Key Takeaway

Coffin Sheep Dam No 3 is classified as low hazard in Washington. It was completed in 1938 and is 88 years old. Its primary use is irrigation.

Physical Details

Dam Length430 ft
Dam TypeEarth
Max Storage104 acre-ft
Normal Storage0 acre-ft
Surface Area0 acres
Drainage Area42 sq mi
Max Discharge0 cfs
Year Completed1938 (88 years old)
NID IDWA00028

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: No
State Regulated: Yes
Regulatory Agency: Washington Dept of Ecology

Ownership

K2H Farms

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Coffin Sheep Dam No 3?

Coffin Sheep Dam No 3 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 Coffin Sheep Dam No 3?

Coffin Sheep Dam No 3 is owned by K2H Farms (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Coffin Sheep Dam No 3 built?

Coffin Sheep Dam No 3 was completed in 1938, making it 88 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 Coffin Sheep Dam No 3?

Coffin Sheep Dam No 3 serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

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.