Lake Wallace Dam Reservoir Report
Last Updated: December 5, 2025
Located in Marlboro, South Carolina, Lake Wallace Dam stands as a vital piece of infrastructure for the state's water management system.
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Summary
Completed in 1955, this earth dam spans 2,500 feet with a height of 19 feet, providing irrigation and recreation opportunities for the surrounding area. With a storage capacity of 1,170 acre-feet, the dam plays a crucial role in regulating water flow from Crooked Creek.
Despite its significant contributions, Lake Wallace Dam faces challenges with a high hazard potential and poor condition assessment. The dam is owned and regulated by the South Carolina Department of Health and Environmental Control, ensuring that it meets state standards for inspection, enforcement, and permitting. With its last inspection in July 2020, efforts are ongoing to maintain and improve the dam's safety and functionality for the benefit of both residents and the environment.
As a key structure in the Wilmington District, Lake Wallace Dam is a symbol of resilience and resourcefulness in water resource management. With its primary purpose of irrigation and additional benefits for recreation, the dam serves as a reminder of the importance of sustainable infrastructure development in the face of climate challenges. Ongoing risk assessment and management measures are essential to ensure the safety and longevity of this critical water resource for future generations.
Year Completed |
1955 |
Dam Length |
2500 |
Dam Height |
19 |
River Or Stream |
CROOKED CREEK |
Primary Dam Type |
Earth |
Surface Area |
442 |
Nid Storage |
1170 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
19 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Pee Dee River Nr Bennettsville
|
2460cfs |
Big Shoe Heel Creek Nr Laurinburg
|
82cfs |
Lumber River Near Maxton
|
372cfs |
Pee Dee R Nr Rockingham
|
1830cfs |
Black Creek Near Quinby
|
350cfs |
Black Creek Near Mcbee
|
108cfs |
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.
Lake Wallace Dam