Louder Number 1 Reservoir Report
Nearby: Louder Number 2 Iversen Number 1
Last Updated: December 8, 2025
Louder Number 1 is a privately owned dam located in Jones, South Dakota, specifically in the city of Fort Pierre.
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Summary
Built in 1956, this Earth-type dam stands at 25 feet high and stretches 366 feet in length, with a storage capacity of 31 acre-feet. Situated on the TR-Bad River, this structure is regulated by the South Dakota Department of Environment and Natural Resources (DENR), with state jurisdiction, permitting, inspection, and enforcement all in place.
Managed by the Natural Resources Conservation Service, Louder Number 1 has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. The dam has a maximum discharge capacity of 837 cubic feet per second, making it an important feature in the water resource infrastructure of the area. Despite its age, the dam remains a crucial component for water management in the region and ensures the protection of surrounding communities from potential flooding events. As a valuable asset for water resource and climate enthusiasts, Louder Number 1 represents a blend of historical significance and practical functionality in the realm of water infrastructure.
Year Completed |
1956 |
Dam Length |
366 |
Dam Height |
25 |
River Or Stream |
TR-BAD RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
31 |
Hazard Potential |
Low |
Nid Height |
25 |
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.
Louder Number 1