Shoshone Lake dam
Shoshone Lake
Shoshone Lake, also known as Long Beach, is a privately owned reservoir located in Fremont, Wyoming, near the city of Milford. Built in 1959 for irrigation purposes, this earth dam stands at 37 feet high and spans 410 feet in length, with a maximum storage capacity of 12,900 acre-feet. The reservoir covers a surface area of 503 acres and is fed by Shoshone Creek, with a drainage area of 10.7 square miles.
With a high hazard potential and fair condition assessment, Shoshone Lake is closely monitored, with inspections conducted every five years. The reservoir's spillway type is uncontrolled with a width of 30 feet, and it is equipped with a single slide (sluice gate) outlet gate. Despite the moderate risk assessment rating, the dam continues to be a crucial water resource for irrigation in the region, serving the surrounding agricultural community.
Managed by private owners and regulated by the State of Wyoming, Shoshone Lake plays a vital role in water management and conservation efforts in the area. As a site of interest for water resource and climate enthusiasts, its strategic location and hydraulic features make it an important asset to the local ecosystem and economy.
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 Shoshone Lake -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Sf L Wind Riv Ab Washakie Res | 629 cfs | → |
| Little Popo Agie River Near Lander | 25 cfs | → |
| Bull Lake Creek Above Bull Lake | 958 cfs | → |
| Wind River Near Kinnear | 757 cfs | → |
| Bull Lake Creek Near Lenore | 831 cfs | → |
| Wind River Near Crowheart | 1,630 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Shoshone Lake.
Track Shoshone Lake 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 Shoshone Lake
Where does the data for Shoshone Lake 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 High 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 Shoshone Lake.