Ambrose Lake Dam Reservoir Report
Last Updated: December 13, 2025
Ambrose Lake Dam, located in Coweta, Georgia, was completed in 1955 for the primary purpose of recreation.
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Summary
This private earth dam stands at a height of 18.4 feet and has a maximum storage capacity of 90 acre-feet, with a normal storage level of 44.4 acre-feet and a surface area of 7.4 acres. While the dam is not state-regulated, it is considered to have a low hazard potential and a moderate risk, with a risk assessment rating of 3 out of 5.
Despite being uncontrolled, the spillway type of Ambrose Lake Dam has managed the release of water effectively over the years. The dam's condition assessment is currently marked as "Not Rated," and there is no available information on the last inspection date or inspection frequency. The dam's designer is listed as "UNKNOWN," adding an air of mystery to this structure that serves as a popular recreational spot in the area.
Ambrose Lake Dam's unique design as an earth dam with buttress core types adds to its appeal for water resource and climate enthusiasts. Located in a picturesque setting near the city of Newnan, this dam offers a serene escape for visitors seeking outdoor activities such as boating, fishing, and picnicking. As interest in water resource management and climate change grows, Ambrose Lake Dam stands as a testament to the intersection of human engineering and natural beauty in Georgia's landscape.
Year Completed |
1955 |
Dam Length |
595 |
Dam Height |
18.4 |
River Or Stream |
UNKNOWN |
Primary Dam Type |
Earth |
Surface Area |
7.4 |
Hydraulic Height |
16.7 |
Nid Storage |
90 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
18 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
New River At Ga 100
|
55cfs |
Chattahoochee River Near Whitesburg
|
1680cfs |
Yellowjacket Cr At Hammett Rd Blw Hogansville
|
36cfs |
Chattahoochee River At Us 27
|
1820cfs |
Snake Creek Near Whitesburg
|
9cfs |
Line Creek Near Senoia
|
30cfs |
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.
Ambrose Lake Dam