Phil No. 1 dam
Phil No. 1
Phil No. 1 is a privately owned dam located in Niobrara, Wyoming, specifically in the city of EDGEMONT S D. Completed in 1966, this earthen dam serves multiple purposes including fire protection, stock watering, and as a small fish pond. With a structural height of 35 feet and a hydraulic height of 30 feet, this dam has a storage capacity of 83 acre-feet and covers a surface area of 5 acres. The dam is situated on the Phil Draw river and is regulated by the State of Wyoming, with inspections conducted every 5 years to ensure its fair condition and low hazard potential.
Managed by the Wyoming State Energy Office, Phil No. 1 features an uncontrolled spillway with a width of 50 feet and an outlet gate for water release. The dam is designed to handle a maximum discharge of 0 cubic feet per second and has a drainage area of 0 square miles. The risk assessment for this structure is rated as moderate (3), indicating a need for ongoing monitoring and risk management measures. The dam is located in Congressional District 00, Wyoming, represented by Liz Cheney (R), and falls under the jurisdiction of the Omaha District of the US Army Corps of Engineers.
Overall, Phil No. 1 is a vital water resource in Wyoming, providing essential services for fire protection, livestock watering, and recreational fishing. With its fair condition and low hazard potential, this dam plays a crucial role in the local ecosystem and contributes to the sustainable management of water resources in the region. Ongoing inspections and risk assessments ensure the safety and functionality of this structure for the benefit of the surrounding community and the environment.
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 Phil No. 1 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| North Platte River At Orin | 612 cfs | → |
| Cheyenne River Near Spencer | 2 cfs | → |
| North Platte River Below Glendo Reservoir | 5,710 cfs | → |
| Cheyenne R At Edgemont Sd | 4 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Phil No. 1.
More reservoirs
Track Phil 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 Phil No. 1
Where does the data for Phil 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 Phil No. 1.