Harold Millett Pond No.2 Reservoir Report
Last Updated: December 6, 2025
Harold Millett Pond No.2, located in Harding, South Dakota, is a privately owned earth dam constructed in 1958 on Rabbit Creek.
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Summary
This dam serves multiple purposes, including flood control and water storage, with a maximum storage capacity of 64 acre-feet. The dam stands at a height of 19 feet and spans a length of 510 feet, with a low hazard potential rating and a condition assessment of "Not Rated."
Managed by the South Dakota Department of Environment and Natural Resources (DENR), Harold Millett Pond No.2 undergoes state regulation, permitting, inspection, and enforcement to ensure its safety and compliance with environmental standards. The dam is part of the Omaha District of the US Army Corps of Engineers, but is not federally owned or funded. It is also not equipped with a spillway or outlet gates, highlighting the simplicity of its design.
For water resource and climate enthusiasts, Harold Millett Pond No.2 offers a fascinating case study of a privately owned dam in a rural setting. Its location on Rabbit Creek and its role in flood control make it a crucial piece of infrastructure in the region. With its low hazard potential and state oversight, this earth dam provides insights into the intersection of water management, environmental regulations, and community resilience in South Dakota.
Year Completed |
1958 |
Dam Length |
510 |
Dam Height |
19 |
River Or Stream |
TR-RABBIT CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
19 |
Nid Storage |
64 |
Hazard Potential |
Low |
Nid Height |
19 |
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.
Harold Millett Pond No.2