Horse Spring Coulee Dam

Horse Springs Coulee· Okanogan, Washington· Built 1924· Earth·
Low Hazard Irrigation State Government

Key Takeaway

Horse Spring Coulee Dam is classified as low hazard in Washington. It was completed in 1924 and is 102 years old. Its primary use is irrigation.

Physical Details

Dam Length650 ft
Dam TypeEarth
Max Storage7.0K acre-ft
Normal Storage0 acre-ft
Surface Area0 acres
Drainage Area3 sq mi
Max Discharge0 cfs
Year Completed1924 (102 years old)
NID IDWA00443

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

WA DNR, Division of Lands & Minerals

State Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Horse Spring Coulee Dam?

Horse Spring Coulee 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 Horse Spring Coulee Dam?

Horse Spring Coulee Dam is owned by WA DNR, Division of Lands & Minerals (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Horse Spring Coulee Dam built?

Horse Spring Coulee Dam was completed in 1924, making it 102 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 Horse Spring Coulee Dam?

Horse Spring Coulee Dam 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.