Horse Spring Coulee Dam dam
Horse Spring Coulee Dam
Horse Spring Coulee Dam, located in Riverside, Washington, was completed in 1924 with the primary purpose of irrigation. This state-regulated dam stands at a hydraulic height of 67 feet and a structural height of 67 feet, serving the Horse Springs Coulee. With a capacity of 7,000 acre-feet and a drainage area of 2.5 square miles, this earth dam plays a crucial role in supporting agricultural activities in the region.
Owned and regulated by the Washington Department of Ecology, Horse Spring Coulee Dam has a low hazard potential and has not been rated for its condition assessment. Despite its age, the dam continues to provide essential water resources for the surrounding area. The dam's design features stone core components and a soil foundation, showcasing the engineering expertise of its time. With its historical significance and ongoing functionality, the Horse Spring Coulee Dam remains a vital infrastructure for water management in Okanogan County.
As climate change continues to impact water resources and agriculture, the Horse Spring Coulee Dam serves as a reminder of the importance of sustainable water management practices. With its location in Congressional District 04, Washington, the dam plays a crucial role in ensuring water security for the region. As enthusiasts of water resources and climate resilience, understanding the history and current status of dams like Horse Spring Coulee Dam is essential for promoting sustainable water management practices in the face of a changing climate.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Horse Spring Coulee Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Okanogan River Near Tonasket | 5,120 cfs | → |
| Okanogan River At Oroville | 164 cfs | → |
| Similkameen River Near Nighthawk | 4,950 cfs | → |
| Andrews Creek Near Mazama | 107 cfs | → |
| Omak Creek Near Omak | 3 cfs | → |
| Methow River At Winthrop | 2,740 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Horse Spring Coulee Dam.
Boat launches
- Loomis-Oroville Road 322, Tonasket
- Loomis-Oroville Road 1667, Loomis
- Split Rock
- Windy Flat Road Okanogan County
- Sinlahekin Road Okanogan County
- Deep Bay Road 98, Oroville
Campgrounds
Track Horse Spring Coulee Dam in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Horse Spring Coulee Dam
Where does the data for Horse Spring Coulee Dam come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Low hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Horse Spring Coulee Dam.