Stiles #1 Reservoir Report
Nearby: Noble (Custer) Hall (Custer)
Last Updated: December 6, 2025
Stiles #1 is a private irrigation dam located in Kinsey, Montana, along Tree Creek.
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Summary
Built in 1930, this earth dam stands at 23.8 feet high and has a storage capacity of 206 acre-feet. While it currently holds a low hazard potential and has not been rated for its condition, it is regularly inspected, regulated, and permitted by the Montana Department of Natural Resources and Conservation (DNRC).
Despite its age, Stiles #1 continues to play a crucial role in supporting agricultural activities in the region by providing irrigation water. The dam is situated in a picturesque area within Custer County, Montana, and is managed by private owners. With a hydraulic height of 16.8 feet, the dam serves as a vital water resource for the surrounding area.
As climate change continues to impact water resources, the maintenance and monitoring of structures like Stiles #1 become increasingly important. With its historical significance and ongoing function in supporting local agriculture, this dam serves as a reminder of the intersection between water management, climate resilience, and sustainable agricultural practices in Montana.
Year Completed |
1930 |
Dam Length |
405 |
Dam Height |
23.8 |
River Or Stream |
TREE CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
16.8 |
Nid Storage |
206 |
Hazard Potential |
Low |
Nid Height |
24 |
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.
Stiles #1