Sowers Reservoir Dam dam
Sowers Reservoir Dam
Sowers Reservoir Dam, located in Valley, Washington, is a privately owned structure that serves primarily for irrigation purposes. Completed in 1958, this earth-type dam stands at a hydraulic height of 18 feet and has a structural height of 15 feet. It impounds the waters of Tr-Sheep Creek, providing a storage capacity of 51 acre-feet and covering a surface area of 7.4 acres.
Managed by the Washington Department of Ecology, the dam has a low hazard potential and is currently not rated for its condition. Despite its age, Sowers Reservoir Dam continues to play a vital role in supporting agricultural activities in the region. With a maximum discharge capacity of 250 cubic feet per second, the dam ensures a reliable water supply for irrigation and recreational activities in the area.
Although the dam has not undergone recent inspections or assessments, its presence highlights the importance of maintaining and monitoring infrastructure to ensure the safety and sustainability of water resources in the face of changing climate conditions. As a key component of the local water management system, Sowers Reservoir Dam stands as a testament to the crucial role of dams in supporting diverse water needs in Washington state.
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 Sowers Reservoir Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Chamokane Creek Below Falls Near Long Lake | 31 cfs | → |
| Little Spokane River At Elk | 48 cfs | → |
| Spokane River Below Nine Mile Dam At Spokane | 6,990 cfs | → |
| Little Spokane River Near Dartford | 447 cfs | → |
| Little Spokane River At Dartford | 200 cfs | → |
| Pend Oreille River At Newport Wa | 50,300 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Sowers Reservoir Dam.
Boat launches
- Viewpoint Road 61, Newport
- South Shore Diamond Lake Road 765-1255, Newport
- Pondoray Shores Road, Newport
- Pow Wow Park, Cusick
- North Aubrey L White Parkway Spokane
- Kaniksu Drive Pend Oreille County
Track Sowers Reservoir 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 Sowers Reservoir Dam
Where does the data for Sowers Reservoir 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 Sowers Reservoir Dam.