Lloyd Fox Dam No.3 Reservoir Report

Last Updated: December 6, 2025

Lloyd Fox Dam No.3, located in Harding, South Dakota, is a privately-owned earth dam constructed in 1960 on the TR MOREAU RIVER.


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Summary

With a height of 18 feet and a length of 600 feet, this dam has a normal storage capacity of 25 acre-feet and a maximum storage capacity of 500 acre-feet. The dam is regulated by the South Dakota Department of Environment and Natural Resources (DENR) and is inspected, permitted, and enforced by the state regulatory agency.

Despite being rated as having a low hazard potential and not having a current condition assessment, Lloyd Fox Dam No.3 plays a crucial role in water resource management in the area. The dam provides flood control and water storage benefits to the surrounding community, ensuring a stable water supply for agricultural and recreational purposes. Managed by the Natural Resources Conservation Service, the dam serves as a vital infrastructure for maintaining the ecological balance and sustainability of the TR MOREAU RIVER.

As a key component of the local water resource infrastructure, Lloyd Fox Dam No.3 is an essential asset for climate enthusiasts and water resource management professionals. With its strategic location and purposeful design, the dam contributes to the overall resilience of the region against potential water-related hazards. By adhering to state regulations and undergoing regular inspections, this dam exemplifies responsible stewardship of water resources in South Dakota, embodying the importance of sustainable water management practices in the face of climate change challenges.

Year Completed

1960

Dam Length

600

Dam Height

18

River Or Stream

TR MOREAU RIVER

Primary Dam Type

Earth

Hydraulic Height

18

Nid Storage

500

Hazard Potential

Low

Nid Height

18
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.