Summary
With a height of 18 feet and a length of 175 feet, this dam has a storage capacity of 56 acre-feet, providing crucial water resources for the surrounding area. The dam is regulated by the Montana Department of Natural Resources and Conservation (DNRC), ensuring proper permitting, inspection, and enforcement to maintain its structural integrity.
Situated on the TR-N Fork Cottonwood Creek, Hook #20 plays a vital role in water management and conservation efforts in the region. With a low hazard potential and a condition assessment of "Not Rated," the dam continues to serve its intended purposes effectively. While the dam has not been modified in recent years and lacks detailed risk assessment measures, its presence contributes to the overall water resource infrastructure in the area.
As climate change continues to impact water availability and quality, structures like Hook #20 are essential for sustainable water management practices. With its modest storage capacity and regulatory oversight, this dam exemplifies the intersection of water resource management and climate adaptation strategies. As enthusiasts in this field, understanding the role of such structures is crucial for addressing the challenges posed by a changing climate on water resources.
Year Completed |
1955 |
Dam Length |
175 |
Dam Height |
18 |
River Or Stream |
TR-N FORK COTTONWOOD CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
18 |
Nid Storage |
56 |
Hazard Potential |
Low |
Nid Height |
18 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Hook #20