Cheney Lake Dam Reservoir Report
Last Updated: December 10, 2025
Cheney Lake Dam, located in Tattnall, Georgia, was completed in 1959 and serves as a private recreational site with a primary purpose of providing leisure activities for water enthusiasts.
°F
°F
mph
Wind
%
Humidity
Summary
The dam is an earth structure with a buttress core type and stands at a height of 11 feet with a length of 300 feet. It has a storage capacity of 85 acre-feet, with a normal storage level of 38 acre-feet, covering a surface area of 9 acres and draining a 315-acre watershed area.
Although Cheney Lake Dam is categorized as having a low hazard potential, it is still considered a moderate risk due to its condition assessment being rated as "Not Rated." The dam features uncontrolled spillways and outlet gates, and while it is not regulated or inspected by the state, it is under the jurisdiction of the Savannah District of the US Army Corps of Engineers. Despite being privately owned, the dam's risk management measures, emergency action plans, and inundation maps are not readily available, indicating potential areas for improvement in the dam's safety and maintenance protocols.
Year Completed |
1959 |
Dam Length |
300 |
Dam Height |
11 |
River Or Stream |
UNKNOWN |
Primary Dam Type |
Earth |
Surface Area |
9 |
Drainage Area |
315 |
Nid Storage |
85 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
11 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Ohoopee River Near Reidsville
|
218cfs |
Canoochee River Near Claxton
|
83cfs |
Altamaha River Near Baxley
|
4930cfs |
Oconee River Near Mount Vernon
|
1610cfs |
Ocmulgee River At Lumber City
|
2940cfs |
Altamaha River At Doctortown
|
5210cfs |
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.
Cheney Lake Dam