Pacific No. 2 dam
Pacific No. 2
Pacific No. 2, also known as Hay Meadow, is a privately owned irrigation dam located in Fremont, Wyoming, along the Sweetwater River. Built in 1922, this earth dam stands at a height of 18 feet and has a hydraulic height of 13 feet. With a length of 750 feet and a storage capacity of 1394 acre-feet, this dam serves primarily for irrigation purposes in the region.
Despite its low hazard potential, Pacific No. 2 is rated as having poor condition, as of the last inspection in July 2021. The dam has an uncontrolled spillway with a width of 400 feet and a single valve outlet gate. Its risk assessment indicates a moderate risk level, highlighting the need for continued monitoring and potential risk management measures to ensure the safety and stability of this essential water resource infrastructure.
With state regulation, inspection, and enforcement in place, Pacific No. 2 remains a crucial component of the water management system in Wyoming. As a key structure along the Sweetwater River, this dam plays a vital role in supporting agricultural activities in the region, emphasizing the importance of ongoing maintenance and risk mitigation efforts to safeguard both the dam and the surrounding community from potential water resource and climate-related challenges.
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 Pacific No. 2 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Pacific Creek Near Farson | 3 cfs | → |
| Big Sandy River Near Farson | 256 cfs | → |
| Little Popo Agie River Near Lander | 25 cfs | → |
| Sweetwater River Near Sweetwater Station | 85 cfs | → |
| Sf L Wind Riv Ab Washakie Res | 629 cfs | → |
| New Fork River Near Big Piney | 1,750 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Pacific No. 2.
Track Pacific No. 2 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 Pacific No. 2
Where does the data for Pacific No. 2 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 Pacific No. 2.