Lavold Dam Reservoir Report
Nearby: Cain Lower Glasston Dam
Last Updated: December 5, 2025
Lavold Dam, located in Sweet Grass, Montana, on the Otter Creek, is a privately-owned structure designed by the USDA NRCS for irrigation purposes.
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Summary
Constructed in 1913, this earth dam stands at a height of 8 feet and has a length of 100 feet, with a storage capacity of 526 acre-feet. While it is regulated by the state and subject to inspection and enforcement by the DNRC, the dam is categorized as having low hazard potential and is currently rated as 'Not Rated' in terms of condition assessment.
Despite its relatively small size, Lavold Dam plays a crucial role in providing water for irrigation in the region, storing water for agricultural use. The dam is situated in a picturesque location, surrounded by the natural beauty of Montana, making it a focal point for water resource and climate enthusiasts. While there are no spillways or locks associated with the dam, its presence ensures the availability of water for the local community and supports the agricultural economy in the area.
As a historic structure with a century-long legacy, Lavold Dam represents a vital piece of Montana's water infrastructure. While it may not have the grandeur of larger dams, its importance in providing water for irrigation and supporting the local ecosystem cannot be understated. With its low hazard potential and state regulation, Lavold Dam stands as a testament to the careful balance between water resource management and environmental conservation in the state.
Year Completed |
1913 |
Dam Length |
100 |
Dam Height |
8 |
River Or Stream |
OTTER CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
8 |
Drainage Area |
0.31 |
Nid Storage |
526 |
Hazard Potential |
Low |
Nid Height |
8 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Lavold Dam