Moore #1 Reservoir Report
Nearby: Gerald Kane Cow Creek
Last Updated: December 5, 2025
Moore #1 is a privately owned earth dam located in Blaine, Montana, along the West Fork Black Coulee.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1960 by the USDA NRCS, this dam serves multiple purposes including fire protection, stock watering, and creating a small fish pond. With a height of 20 feet and a length of 500 feet, Moore #1 has a storage capacity of 72 acre-feet and a drainage area of 0.78 square miles. Despite its age, the dam is classified as having a low hazard potential and is currently in a "Not Rated" condition assessment status.
The primary regulatory agency for Moore #1 is the Montana Department of Natural Resources and Conservation (DNRC), which oversees state jurisdiction, permitting, inspection, and enforcement of the dam. The dam is not federally owned or funded, but it does fall under the jurisdiction of the Omaha District of the US Army Corps of Engineers. As an important water resource in the area, Moore #1 plays a vital role in providing water for firefighting efforts, livestock, and recreational fishing. While the dam's emergency action plan and risk assessment status are currently unknown, its location and purpose make it an essential asset for both water management and climate resilience in the region.
Year Completed |
1960 |
Dam Length |
500 |
Dam Height |
20 |
River Or Stream |
WEST FORK BLACK COULEE |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Drainage Area |
0.78 |
Nid Storage |
72 |
Hazard Potential |
Low |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Judith River Nr Mouth
|
368cfs |
Peoples Creek Near Hays Mt
|
4cfs |
Clear Creek Near Chinook Mt
|
21cfs |
Milk River At Havre Mt
|
42cfs |
Big Sandy Creek Near Havre Mt
|
6cfs |
Missouri River At Virgelle Mt
|
4290cfs |
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.
Moore #1