Bronson #1 Reservoir Report
Nearby: Bronson #2 Berry Dam
Last Updated: December 13, 2025
Bronson #1 is a privately owned dam located in Mellette, South Dakota, along the TR Larvie Creek offstream.
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Summary
Constructed in 1950, this earth dam stands at a height of 24 feet and has a storage capacity of 620 acre-feet. Despite its low hazard potential, the dam is regulated by the South Dakota Department of Environment and Natural Resources (DENR) and undergoes regular inspections, permitting, and enforcement.
With a maximum discharge of 786 cubic feet per second, Bronson #1 plays a crucial role in managing water resources in the area. While the dam's condition is currently rated as "Not Rated," its emergency action plan (EAP) status and risk assessment details are yet to be determined. The dam's location within the St. Paul District and its compliance with state regulations highlight its importance in the region's water infrastructure network.
For water resource and climate enthusiasts, Bronson #1 serves as a fascinating example of how private dams contribute to water management efforts in South Dakota. Its historical significance, engineering specifications, and regulatory oversight offer valuable insights into the intersection of infrastructure, environmental protection, and public safety. As discussions around water security and climate resilience continue to evolve, understanding the role of dams like Bronson #1 becomes increasingly essential in ensuring sustainable water resource management practices.
Year Completed |
1950 |
Dam Length |
370 |
Dam Height |
24 |
River Or Stream |
TR LARVIE CREEK OFFSTREAM |
Primary Dam Type |
Earth |
Hydraulic Height |
24 |
Nid Storage |
620 |
Hazard Potential |
Low |
Nid Height |
24 |
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.
Bronson #1