Basin Reservoir dam
Basin Reservoir
Basin Reservoir, located in Sublette, Wyoming, is a federal-owned water supply reservoir with a primary purpose of providing water to the surrounding area. The dam, primarily made of earth and stone, stands at a height of 28 feet and has a storage capacity of 53 acre-feet. While the reservoir has a low hazard potential and is currently in fair condition, it is regularly inspected and regulated by the State of Wyoming to ensure its safety and functionality.
The reservoir, situated on Airy Basin, is under the jurisdiction of the Sacramento District of the US Army Corps of Engineers. It features an uncontrolled spillway with a width of 25 feet and is equipped with emergency action plans to address any potential risks. Despite its moderate risk assessment, Basin Reservoir remains a vital water resource for the region and plays a crucial role in water supply management. With its strategic location and sustainable design, it serves as a key asset for water resource and climate enthusiasts interested in the conservation and utilization of water resources in Wyoming.
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 Basin Reservoir -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Green River At Warren Bridge | 841 cfs | → |
| Pine Creek Above Fremont Lake | 549 cfs | → |
| New Fork River Near Big Piney | 1,050 cfs | → |
| Dinwoody Creek Above Lakes | 178 cfs | → |
| Bull Lake Creek Above Bull Lake | 554 cfs | → |
| Big Sandy River Near Farson | 210 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Basin Reservoir.
Boat launches
- Fremont Lake Boat Ramp
- North Boulder Lake Campground Boat Launch
- Boulder Lake Boat Ramp
- Green River Access Site 2 Boat Launch
- Green River Access Site 1 Boat Ramp
- Green River Access Site 3 Boat Launch
Campgrounds
- Soda Lake Whma - West Boat Ramp - Wgf
- Soda Lake Whma - East Boat Ramp - Wgf
- Willow Lake
- Fremont Lake
- Fremont Lake Campground And Group Campground
- Half Moon Lake
Fishing spots
More reservoirs
Track Basin Reservoir 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 Basin Reservoir
Where does the data for Basin Reservoir 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 Basin Reservoir.