Terry Reservoir Report
Nearby: Sam Transistor #2
Last Updated: December 5, 2025
Terry is a privately-owned irrigation structure located in Dodson, Montana, along the Savoy Creek.
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Summary
Built in 1954 by the USDA NRCS, this earth dam stands at 15 feet high and spans 250 feet in length. With a storage capacity of 184 acre-feet, it serves the primary purpose of irrigation in the region. The dam is regulated by the DNRC and is subject to state permitting, inspection, and enforcement, ensuring its safety and compliance with regulations.
Despite its age, Terry has a low hazard potential and has not been rated for its condition assessment. The dam features a spillway width of 35 feet and a maximum discharge of 150 cubic feet per second. While it has not been modified in recent years, its emergency action plan status and risk management measures are currently unknown. With its location in a picturesque rural setting and its vital role in supporting agricultural activities, Terry is an important water resource for the local community and a point of interest for water resource and climate enthusiasts.
Overall, Terry serves as a testament to the ongoing importance of water resource management and infrastructure in sustaining agricultural practices in Montana. As a privately-owned structure with state oversight and support from the USDA NRCS, it represents a collaborative effort to ensure the responsible use of water resources for irrigation purposes. With its historical significance and functional design, Terry stands as a reminder of the critical role that dams play in supporting local economies and ecosystems, making it a valuable asset for both the community and environmental enthusiasts alike.
Year Completed |
1954 |
Dam Length |
250 |
Dam Height |
15 |
River Or Stream |
SAVOY CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Drainage Area |
16 |
Nid Storage |
184 |
Hazard Potential |
Low |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Milk River Near Harlem Mt
|
69cfs |
Milk River Near Dodson Mt
|
68cfs |
Peoples Creek Near Hays Mt
|
4cfs |
Battle Creek Near Chinook Mt
|
12cfs |
Clear Creek Near Chinook Mt
|
21cfs |
Milk River At Malta Mt
|
0cfs |
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.
Terry