Greenwood Lake Dam Reservoir Report
Nearby: Cheek Lake Dam Lake Alexandra Dam
Last Updated: December 5, 2025
Greenwood Lake Dam in Thomasville, Georgia, is a privately owned structure primarily used for recreation on Watts Branch.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1934, this earth dam stands at a height of 11.8 feet, with a hydraulic height of 11.2 feet and a length of 440 feet. It provides a storage capacity of 122 acre-feet, with a normal storage level of 64 acre-feet and a surface area of 16 acres.
Although the dam is classified as having a low hazard potential, it is still subject to regular inspections every five years. The condition assessment is currently listed as "Not Rated," indicating a need for further evaluation. Despite being privately owned, the state jurisdiction applies to Greenwood Lake Dam, ensuring compliance with regulations and inspection requirements.
Water resource and climate enthusiasts will find Greenwood Lake Dam an intriguing structure, with its historical significance and its role in providing recreational opportunities in the area. Its location on Watts Branch adds to its appeal, and its moderate risk assessment rating underscores the importance of ongoing oversight and maintenance to ensure its continued safety and functionality.
Year Completed |
1934 |
Dam Length |
440 |
Dam Height |
11.8 |
River Or Stream |
WATTS BRANCH |
Primary Dam Type |
Earth |
Surface Area |
16 |
Hydraulic Height |
11.2 |
Drainage Area |
1480 |
Nid Storage |
122 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
12 |
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.
Greenwood Lake Dam