Laas Reservoir Report
Nearby: Skari And Sons #1 Big (Toole)
Last Updated: December 21, 2025
Laas is a privately owned earth dam located in Liberty, Montana, along Eagle Creek.
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Summary
Built in 1955 by the USDA NRCS, it serves multiple purposes including fire protection, stock, and small fish pond. With a height of 15 feet and a length of 800 feet, Laas has a storage capacity of 313 acre-feet and a drainage area of 25 square miles. The dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment.
Despite being privately owned, Laas is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and undergoes state inspections, permitting, and enforcement. The dam is situated in Congressional District 00, Montana, with Greg Gianforte serving as the representative. While the dam has not had any recent inspections or assessments, it has not been deemed to pose a significant risk.
Overall, Laas remains an essential water resource structure in the region, providing valuable services for fire protection, livestock, and recreational purposes. As climate change continues to impact water resources, it is crucial to ensure the safety and efficiency of dams like Laas to mitigate risks and protect communities downstream.
Year Completed |
1955 |
Dam Length |
800 |
Dam Height |
15 |
River Or Stream |
EAGLE CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Drainage Area |
25 |
Nid Storage |
313 |
Hazard Potential |
Low |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Marias River Near Chester Mt
|
253cfs |
Marias River Near Shelby Mt
|
1660cfs |
Milk River At Eastern Crossing Of Int Bndry
|
4cfs |
Teton River Near Dutton Mt
|
83cfs |
Cut Bank Creek At Cut Bank Mt
|
138cfs |
Marias River Near Loma Mt
|
335cfs |
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.
Laas