Mcintosh No. 1 dam
Mcintosh No. 1
Mcintosh No. 1 is a privately owned earth dam located in Fremont, Wyoming, along the Sheehan Springs Draw. Completed in 1979, this dam stands at a height of 80 feet and has a storage capacity of 611 acre-feet, with a surface area of 26 acres. The primary purpose of this structure is for tailings management, making it a crucial resource for environmental protection and water management in the region.
Despite its low hazard potential, Mcintosh No. 1 is in poor condition and has not been adequately assessed or maintained in recent years. With a moderate risk assessment rating, there is a pressing need for inspection and rehabilitation to ensure the safety and integrity of this dam. The dam's spillway, although uncontrolled, has a width of 85 feet, providing some level of flood protection, but a more comprehensive risk management plan is needed to address the current state of disrepair.
Located in a critical area for water resources and climate considerations, Mcintosh No. 1 serves as a reminder of the importance of regular inspection and maintenance for dam infrastructure. As water resource and climate enthusiasts, it is imperative to advocate for the proper management and upkeep of such structures to prevent potential environmental disasters and ensure the long-term sustainability of water systems 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 Mcintosh No. 1 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Sweetwater River Near Sweetwater Station | 96 cfs | → |
| Sweetwater River Near Alcova | 27 cfs | → |
| Little Popo Agie River Near Lander | 25 cfs | → |
| Little Wind River Near Riverton | 1,630 cfs | → |
| Wind River At Riverton | 1,090 cfs | → |
| N Platte Riv Ab Seminoe Reservoir | 1,450 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mcintosh No. 1.
More reservoirs
Track Mcintosh No. 1 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 Mcintosh No. 1
Where does the data for Mcintosh No. 1 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 Mcintosh No. 1.