Peterson #1 dam
Peterson #1
Peterson #1, located in Pompeys Pillar, Montana, is a privately owned earth dam completed in 1958 for fire protection, stock, and small fish pond purposes. Standing at a height of 16 feet with a length of 325 feet, this dam has a storage capacity of 80 acre-feet, with a normal storage level of 34 acre-feet. Situated on TR-FLY Creek, the dam serves as a crucial water resource in Big Horn County, Montana, ensuring water availability for various uses in the region.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), Peterson #1 has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. While the dam has not been inspected recently and lacks an Emergency Action Plan (EAP), it continues to play a vital role in water management and conservation efforts in the area. With its strategic location and purposeful design, Peterson #1 stands as a testament to the importance of sustainable water resource management in the face of changing climate patterns.
As climate enthusiasts and water resource advocates continue to monitor the impact of climate change on water availability and quality, structures like Peterson #1 serve as essential components of the local water infrastructure. While the dam's condition assessment remains pending and updates on emergency preparedness are needed, its role in providing water for fire protection, livestock, and aquatic life underscores the significance of proactive water management practices in the region. As discussions on climate resilience and water resource sustainability gain momentum, Peterson #1 stands as a tangible example of the interconnectedness between water resources, infrastructure, and climate adaptation strategies.
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 Peterson #1 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Pryor Creek Nr Huntley Mt | 21 cfs | → |
| Yellowstone River At Billings Mt | 14,200 cfs | → |
| Little Bighorn River Near Hardin Mt | 271 cfs | → |
| Bighorn River Near St. Xavier | 1,540 cfs | → |
| Bighorn River Ab Tullock Cr Nr Bighorn Mt | 1,810 cfs | → |
| Clarks Fork Yellowstone River At Edgar Mt | 2,690 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Peterson #1.
Campgrounds
Fishing spots
More reservoirs
Track Peterson #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 Peterson #1
Where does the data for Peterson #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 Peterson #1.