None Reservoir Report
Nearby: Second Telegraph R Pankratz #1
Last Updated: December 26, 2025
Located in Phillips, Montana, the None dam was completed in 1949 by the USDA NRCS for the primary purpose of irrigation.
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Summary
This earth dam stands at 20 feet in height, with a storage capacity of 144 acre-feet and a drainage area of 1.09 square miles. The dam is regulated by the Montana Department of Natural Resources and Conservation, with state permitting, inspection, and enforcement in place to ensure its safety and functionality.
With a low hazard potential and a condition assessment of "Not Rated," the None dam on TR-Second Creek is a crucial water resource for the surrounding area. The dam's spillway width of 200 feet and maximum discharge of 1000 cubic feet per second contribute to its efficient operation. Although specific details regarding inspection frequency and emergency preparedness are not available, the dam remains a key component of the local irrigation infrastructure, serving the agricultural community in the region.
Despite its simple name, the None dam plays a significant role in water management in Montana, providing essential irrigation water for the area. Governed by state regulations and designed by USDA NRCS, this earth dam stands as a testament to the importance of water resource infrastructure in sustaining agricultural activities in the region. With a history dating back to the mid-20th century, the None dam continues to fulfill its purpose of water storage and distribution, contributing to the overall water security and climate resilience of the area.
Year Completed |
1949 |
Dam Length |
200 |
Dam Height |
20 |
River Or Stream |
TR-SECOND CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Drainage Area |
1.09 |
Nid Storage |
144 |
Hazard Potential |
Low |
Nid Height |
20 |
Seasonal Comparison
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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.
None