Allison dam
Allison
Allison, a privately owned irrigation dam located in Cut Bank, Montana, was completed in 1964 and stands at a height of 12 feet with a length of 240 feet. Managed by the Montana Department of Natural Resources and Conservation, this earth dam serves the primary purpose of irrigation, storing a maximum of 91 acre-feet of water. Situated on diffused surface water, Allison poses a low hazard potential and has not been rated for its condition. Despite being located in a remote area in Toole County, Montana, Allison plays a crucial role in supporting local agriculture through its water storage capabilities.
While Allison has not been subject to recent inspections or condition assessments, it remains under state jurisdiction and regulation, ensuring that it meets safety standards for its intended purpose. With a design focused on irrigation, Allison contributes to the sustainable management of water resources in the region, highlighting the importance of dams in supporting agricultural activities in arid environments. As a part of the broader water infrastructure network in Montana, Allison showcases the collaboration between private owners and state agencies in maintaining critical water sources for the community.
As climate change continues to impact water availability and distribution, structures like Allison play a vital role in securing water resources for agriculture and other essential needs. By ensuring the proper management and maintenance of dams like Allison, stakeholders can adapt to changing climate conditions and mitigate the potential risks associated with water scarcity. As water resource and climate enthusiasts, understanding the infrastructure and regulations surrounding dams like Allison is crucial for promoting sustainable water management practices in a changing world.
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 Allison -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Marias River Near Shelby Mt | 1,420 cfs | → |
| Marias River Near Chester Mt | 604 cfs | → |
| Cut Bank Creek At Cut Bank Mt | 304 cfs | → |
| Milk River At Eastern Crossing Of Int Bndry | 538 cfs | → |
| Teton River Near Dutton Mt | 83 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Allison.
Track Allison 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 Allison
Where does the data for Allison 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 Allison.