Ursula Dam Reservoir Report

Last Updated: December 5, 2025

Ursula Dam, located in Edgefield, South Carolina, stands as a testament to the innovative engineering of the USDA NRCS, who designed this Earth dam in 1991.


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Summary

With a height of 32 feet and a length of 210 feet, the dam serves multiple purposes, including recreation and water storage for the TR-HORN CREEK. The dam boasts a storage capacity of 26 acre-feet, with an impressive surface area of 3 acres for enthusiasts to enjoy.

Despite its low hazard potential, Ursula Dam is currently assessed as being in poor condition, with its last inspection in August 2017 revealing areas that require attention. The dam's risk assessment is moderate, indicating a level 3 risk, suggesting the need for continued monitoring and potential risk management measures. With its picturesque location in the Charleston District and its crucial role in water resource management, Ursula Dam remains a focal point for water resource and climate enthusiasts seeking to understand the intersection of infrastructure and natural ecosystems.

Year Completed

1991

Dam Length

210

Dam Height

32

River Or Stream

TR-HORN CREEK

Primary Dam Type

Earth

Surface Area

3

Nid Storage

26

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

32
       
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.