Tanglewood Lake Dam Reservoir Report
Last Updated: December 5, 2025
Tanglewood Lake Dam, located in Ben Hill, Georgia, was designed by Hoyt English and completed in 1981 for the primary purpose of recreation.
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Summary
This private earth dam stands at a height of 22 feet and has a hydraulic height of 21 feet, with a length of 840 feet and a storage capacity of 142 acre-feet. The dam's spillway type is uncontrolled, and it has an uncontrolled outlet gate.
Despite being classified as having a low hazard potential, Tanglewood Lake Dam has a moderate risk assessment due to its condition not being rated. The dam's last inspection was conducted in October 2016, with an inspection frequency of every 5 years. The risk management measures and emergency action plan status for the dam are currently unlisted, indicating a potential area for improvement in ensuring the safety and stability of this recreational water resource in the face of changing climate conditions.
Year Completed |
1981 |
Dam Length |
840 |
Dam Height |
22 |
River Or Stream |
UNKNOWN |
Primary Dam Type |
Earth |
Surface Area |
12 |
Hydraulic Height |
21 |
Drainage Area |
40 |
Nid Storage |
142 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
22 |
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.
Tanglewood Lake Dam