Fillenworth #3 Reservoir Report
Nearby: Fillenworth Reservoir #1 Dreyer
Last Updated: February 7, 2026
Fillenworth #3 is a private dam located in Wolf Point, Montana, along the TR- McGuire Creek.
Summary
Completed in 1948, this earth dam stands at 17 feet high and spans 190 feet in length, providing storage for fire protection, stock, or small fish pond purposes. With a maximum storage capacity of 77 acre-feet, the dam is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and is inspected, enforced, and permitted by the state.
Despite its low hazard potential, Fillenworth #3 has not been rated for its condition assessment. The dam has not undergone any modifications since its completion and does not have an emergency action plan in place. While the risk assessment and management measures are currently unknown, the dam's location in a relatively rural area with limited surrounding structures may contribute to its lower risk potential. For water resource and climate enthusiasts, Fillenworth #3 presents an intriguing case study of a privately owned dam in Montana with a unique blend of uses and regulatory oversight.
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15-Day Weather Outlook
Year Completed |
1948 |
Dam Length |
190 |
Dam Height |
17 |
River Or Stream |
TR- MCGUIRE CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
17 |
Nid Storage |
77 |
Hazard Potential |
Low |
Nid Height |
17 |
Seasonal Comparison
5-Day Hourly Forecast Detail
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.
Fillenworth #3