Bullhook Lower Diversion dam
Bullhook Lower Diversion
The Bullhook Lower Diversion in Loman, Montana, is a key infrastructure project owned by the local government and regulated by the Montana Department of Natural Resources and Conservation. Completed in 1955, this earth dam stands at a height of 77 feet and serves the primary purpose of flood risk reduction along the Bullhook Below Spillway Channel. With a maximum storage capacity of 785 acre-feet and a normal storage of 430 acre-feet, the dam plays a crucial role in managing water resources in the region.
Situated in Hill County, Montana, the Bullhook Lower Diversion is inspected every five years and has been assessed as being in satisfactory condition, with a high hazard potential. The dam's emergency action plan is regularly updated to ensure preparedness for any potential risks. Congressman Greg Gianforte represents the area in Congressional District 00, where the dam is located, highlighting the importance of this infrastructure in mitigating flood risks in the region. Enthusiasts of water resources and climate will find the Bullhook Lower Diversion to be a fascinating example of how engineering solutions can contribute to environmental resilience.
Overall, the Bullhook Lower Diversion stands as a testament to effective flood risk reduction efforts in Montana and showcases the importance of proper infrastructure management in safeguarding water resources. Climate and water resource enthusiasts will appreciate the detailed data on this structure and its role in protecting the surrounding community from potential hazards. As the dam continues to be monitored and maintained, it serves as a critical piece of infrastructure in the region's overall water management strategy.
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 Bullhook Lower Diversion -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Milk River At Havre Mt | 981 cfs | → |
| Big Sandy Creek Near Havre Mt | 4 cfs | → |
| Clear Creek Near Chinook Mt | 6 cfs | → |
| Battle Creek Near Chinook Mt | 2 cfs | → |
| Milk River Near Harlem Mt | 461 cfs | → |
| Milk River At Eastern Crossing Of Int Bndry | 593 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Bullhook Lower Diversion.
Track Bullhook Lower Diversion 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 Bullhook Lower Diversion
Where does the data for Bullhook Lower Diversion 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 High 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 Bullhook Lower Diversion.