Mcmillen Lower Pond Dam Reservoir Report
Last Updated: December 5, 2025
Located in Marion, South Carolina, Mcmillen Lower Pond Dam, also known as Laverne Mcmillan Dam 2, was completed in 1970 for recreational purposes.
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Summary
This private dam stands at a height of 14 feet and stretches 1650 feet in length, creating a storage capacity of 67 acre-feet. The dam is situated on the TR-BROWN SWAMP water source and is regulated by the South Carolina Department of Health and Environmental Control (DHEC).
Despite its low hazard potential, Mcmillen Lower Pond Dam has a poor condition assessment as of the last inspection in November 2017. With a moderate risk rating, the dam poses some level of risk to the surrounding area. However, it does not fall under the jurisdiction of the U.S. Army Corps of Engineers. As a popular spot for recreational activities, the dam serves as a valuable asset to the community, but its condition may require attention to ensure continued safety and functionality for water resource and climate enthusiasts in the area.
Year Completed |
1970 |
Dam Length |
1650 |
Dam Height |
14 |
River Or Stream |
TR-BROWN SWAMP |
Primary Dam Type |
Earth |
Surface Area |
8 |
Nid Storage |
67 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
14 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Pee Dee R. At Galivants Ferry
|
1370cfs |
Pee Dee River Below Pee Dee
|
3250cfs |
Pee Dee River At Peedee
|
3290cfs |
Lumber River At Boardman
|
814cfs |
Waccamaw River At Conway Marina At Conway
|
2260cfs |
Black Creek Near Quinby
|
350cfs |
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.
Mcmillen Lower Pond Dam