Summary
With a capacity of 721 acre-feet, the reservoir plays a crucial role in supporting agricultural activities in the region, specifically for irrigation purposes. The dam, standing at a height of 12.2 meters, serves as a significant water resource infrastructure in the area.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), Rocky Crossing Reservoir is subject to state regulations, inspections, and enforcement to ensure its safety and functionality. Despite being classified as having a significant hazard potential, the reservoir's condition assessment is currently not rated, suggesting a need for further evaluation to address any potential risks. The reservoir's location and design make it a key component in water management and conservation efforts in the region.
Water resource and climate enthusiasts will find Rocky Crossing Reservoir to be a valuable asset in the sustainable use of water for agricultural purposes in Montana. As a vital piece of infrastructure along Big Sandy Creek, the reservoir's role in irrigation highlights the importance of efficient water management in supporting local farming activities. With its state-regulated status and ongoing inspections, Rocky Crossing Reservoir stands as a testament to the commitment to maintaining water infrastructure for the benefit of both the community and the environment.
Year Completed |
1950 |
Dam Length |
3100 |
Dam Height |
12.2 |
River Or Stream |
BIG SANDY CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
10.4 |
Drainage Area |
471 |
Nid Storage |
721 |
Hazard Potential |
Significant |
Nid Height |
12 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Missouri River At Virgelle Mt
|
4290cfs |
Big Sandy Creek Near Havre Mt
|
6cfs |
Milk River At Havre Mt
|
42cfs |
Teton River At Loma Mt
|
30cfs |
Marias River Near Loma Mt
|
335cfs |
Clear Creek Near Chinook Mt
|
21cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo 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. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
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. Investigations and studies are necessary.
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.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams 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, environment 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.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Rocky Crossing Reservoir