Griffin #2 dam
Griffin #2
Griffin #2, located in Terry, Montana, is a privately owned water structure built in 1956 for fire protection, stock, and small fish pond purposes. Situated on North Wolf Creek, this earth-type dam stands at a height of 20 feet and has a length of 450 feet, providing a storage capacity of 154 acre-feet. Despite being rated as low hazard potential, the dam's condition assessment remains unrated, highlighting the need for further evaluation and maintenance to ensure its long-term safety and functionality.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), Griffin #2 is subject to state regulations and inspections to uphold its integrity and compliance with safety standards. The dam's primary purpose and design reflect its importance in providing essential water resources for both fire protection and agricultural needs in the surrounding area. As a crucial component of the local water infrastructure, Griffin #2 serves as a vital resource for the community's resilience against water-related challenges, highlighting the significance of sustainable water management practices in the face of climate change impacts.
With its historical significance and ongoing role in supporting local water needs, Griffin #2 represents a key asset in Montana's water resource portfolio. As climate change continues to pose threats to water availability and quality, the maintenance and monitoring of structures like Griffin #2 are essential to ensure the continued provision of water for various uses. By prioritizing the safety and sustainability of water infrastructure, stakeholders can work towards safeguarding valuable resources for future generations and mitigating the impacts of a changing climate on water availability and resilience.
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 Griffin #2 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Powder River Near Locate Mt | 17 cfs | → |
| Pumpkin Creek Near Miles City Mt | 0 cfs | → |
| Tongue River At Miles City Mt | 61 cfs | → |
| Yellowstone River At Miles City Mt | 10,600 cfs | → |
| Yellowstone River At Glendive Mt | 9,690 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Griffin #2.
Track Griffin #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 Griffin #2
Where does the data for Griffin #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 Griffin #2.