Thompson Srd dam
Thompson Srd
Thompson Srd, also known as the Seepage Return Dam, is a privately owned structure located in Clayton, Idaho. Built in 1982, this earth dam serves the primary purpose of water supply, with a storage capacity of 75 acre-feet and a drainage area of 3.5 square miles. The dam stands at a height of 76.6 feet, with a hydraulic height of 72 feet, and a length of 360 feet. It is situated on the Bruno Creek and Squaw Creek, within Custer County, Idaho.
Managed by the Idaho Department of Water Resources, Thompson Srd is regulated, inspected, and enforced at the state level to ensure its safety and functionality. The dam features an uncontrolled spillway with a width of 7 feet and slide gates for outlet control. Despite being classified as having a significant hazard potential, the dam's condition assessment in 2018 deemed it to be satisfactory. With a moderate risk rating, measures for risk management and emergency preparedness are yet to be fully detailed for this key water resource infrastructure.
Water resource and climate enthusiasts will find Thompson Srd to be a vital component of the regional water supply infrastructure in Idaho. Its strategic location, storage capacity, and state-regulated management make it a crucial asset for water management in the area. As efforts continue to monitor and maintain the dam's safety and functionality, its role in supporting water needs in Clayton and surrounding areas remains essential for sustainable water resource management in the region.
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 Thompson Srd -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Squaw Creek Bl Bruno Creek Nr Clayton Id | 119 cfs | → |
| Thompson Creek Nr Clayton Id | 58 cfs | → |
| Yankee Fork Salmon River Nr Clayton Id | 948 cfs | → |
| Salmon River Bl Yankee Fork Nr Clayton Id | 3,150 cfs | → |
| Valley Creek At Stanley Id | 556 cfs | → |
| Pahsimeroi River At Ellis Id | 235 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Thompson Srd.
Boat launches
Campgrounds
- Holman Creek Campground
- Holman Creek
- Whiskey Flats Campground
- Bayhorse Campground
- Big Bayhorse Campground
- Big Bayhorse
Fishing spots
Track Thompson Srd 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 Thompson Srd
Where does the data for Thompson Srd 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 Significant 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 Thompson Srd.