Mildred #1 Reservoir Report
Nearby: Halmans #2 Halmans #3
Last Updated: December 5, 2025
Mildred #1 is a privately owned earth dam located in Fallon County, Montana, specifically in the city of Mildred.
°F
°F
mph
Wind
%
Humidity
Summary
Completed in 1948, this dam serves multiple purposes including fire protection, stock, and as a small fish pond. Situated on TR-Cottonwood Creek, Mildred #1 has a height and hydraulic height of 15 feet, with a storage capacity of 64 acre-feet. While the dam has a low hazard potential, its condition is currently not rated.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), Mildred #1 is regulated, permitted, inspected, and enforced by the state. The dam falls under state jurisdiction and is subject to regular state inspections and maintenance. With a primary source agency of MT, Mildred #1 is a vital resource for water storage and fire protection in the area. Despite its low hazard potential, proper risk management measures are in place to ensure the safety and integrity of the dam for the surrounding community and ecosystem.
Year Completed |
1948 |
Dam Length |
50 |
Dam Height |
15 |
River Or Stream |
TR-COTTONWOOD CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Nid Storage |
64 |
Hazard Potential |
Low |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Missouri River At Marmarth
|
12cfs |
Deep Creek Nr Amidon
|
0cfs |
Little Missouri River At Medora
|
64cfs |
Yellowstone River At Glendive Mt
|
6000cfs |
Beaver Creek Nr Trotters
|
0cfs |
Powder River Near Locate Mt
|
231cfs |
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.
Mildred #1