Horse Spring Coulee Dam

Horse Spring Coulee Dam is an earth dam located in Okanogan County, Washington, built in 1924. It carries a Low hazard potential classification.

About Horse Spring Coulee Dam

The primary purpose of Horse Spring Coulee Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Wa Dnr, Division Of Lands & Minerals (state). It impounds the Horse Springs Coulee near Riverside.

The dam stands 67 feet tall and stretches 650 feet across, has a maximum storage capacity of 7,000 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1924, the structure is over a century old.

This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.

At 67 feet, this dam is taller than 96% of all dams in the United States.

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Low Hazard ConditionEmergency Action Plan: Not Required

Location

StateWashington
CountyOkanogan
Nearest CityRiverside
River/StreamHorse Springs Coulee
Coordinates48.78690, -119.56410

Physical Characteristics

Dam TypeEarth
NID Height67 ft
Dam Length650 ft
Year Completed1924 (102 years old)

Storage & Hydraulics

NID Storage7,000 acre-ft
Max Storage7,000 acre-ft
Drainage Area2 sq mi

Ownership & Safety

PurposeIrrigation
OwnerWA DNR, Division of Lands & Minerals
Owner TypeState
Hazard ClassificationLow
Emergency Action PlanNot Required

Identifiers

NID IDWA00443
Federal IDWA00443
More InfoState Dam Safety Program

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