H C Brown #1 Reservoir Report
Last Updated: December 24, 2025
H C Brown #1 is a privately owned earth dam located in Lodge Grass, Montana, along the TR-OWL CREEK.
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Summary
Completed in 1961, this multipurpose dam serves primarily for fire protection, stock, and small fish pond purposes. With a height of 20 feet and a storage capacity of 72 acre-feet, the dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), H C Brown #1 is regulated, permitted, inspected, and enforced by the state. The dam has not been significantly modified since its construction and does not have an emergency action plan in place. Despite being a low-risk structure, the dam does not have designated emergency contacts, inundation maps, risk assessments, or risk management measures documented.
Located within the Big Horn County in Montana, H C Brown #1 is situated in a critical area for water resource and climate enthusiasts. With its strategic position along the TR-OWL CREEK and its multiple purposes, this dam offers a unique opportunity to study the intersection of water management, environmental conservation, and infrastructure resilience in the region.
Year Completed |
1961 |
Dam Length |
60 |
Dam Height |
20 |
River Or Stream |
TR-OWL CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
72 |
Hazard Potential |
Low |
Nid Height |
20 |
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.
H C Brown #1