Twin Pots dam
Twin Pots
Twin Pots is a privately owned irrigation structure located in Altonah, Duchesne County, Utah. Built in 1931, this earth dam stands at a hydraulic height of 35 feet and a structural height of 38 feet, with a length of 515 feet. The dam has a storage capacity of 4600 acre-feet, with a normal storage level of 4050 acre-feet, serving the primary purpose of irrigation. The reservoir is situated on the West Fork Lake Creek-offstream and is under the jurisdiction of the Utah Division of Water Rights.
Despite its age, Twin Pots remains in fair condition with a high hazard potential, prompting regular state inspections and enforcement to ensure its safety and integrity. The dam has a maximum discharge capacity of 46 cubic feet per second and is equipped with an unspecified spillway type. While the dam has not undergone any significant modifications over the years, it is subject to an annual inspection frequency to assess its ongoing performance. Twin Pots poses a risk of inundation, and its emergency action plan status and risk management measures have yet to be fully documented.
Enthusiasts of water resources and climate in the area can appreciate Twin Pots for its historical significance in irrigation infrastructure and its role in managing water resources in the region. The dam's location in the picturesque surroundings of Altonah adds to its appeal, while its high hazard potential underscores the importance of regular maintenance and monitoring to mitigate potential risks. Twin Pots stands as a testament to the engineering ingenuity of its time and serves as a vital piece of infrastructure in sustaining agricultural activities in the Duchesne County area.
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 Twin Pots -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Lake Fork River Bl Moon Lake Nr Mountain Home | 262 cfs | → |
| Yellowstone River Near Altonah | 290 cfs | → |
| Yellowstone R. At Bridge Campgrnd | 222 cfs | → |
| Rock Creek Near Mountain Home | 48 cfs | → |
| Lake Fork River Ab Moon Lake | 296 cfs | → |
| Duchesne River Near Tabiona | 97 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Twin Pots.
Campgrounds
Fishing spots
- Reservoir Day Use Fishing Site
- Lower Stillwater Day Use Area Fishing Site
- Cabin Lake
- Carrol Lake
- Lake Atwood
- Browns Draw Reservoir
Track Twin Pots 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 Twin Pots
Where does the data for Twin Pots 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 Twin Pots.