Rainwater Lake Dam Reservoir Report
Nearby: Bell Lake Dam Carlos Camp
Last Updated: December 6, 2025
Rainwater Lake Dam, located in Coweta, Georgia, was completed in 1974 and serves as a vital water resource for the area.
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Summary
The dam stands at a height of 21.2 feet and has a primary purpose of recreation, offering a surface area of 11 acres for outdoor activities. With a normal storage capacity of 58 acre-feet and a drainage area of 400 acres, the dam provides crucial water storage and management for the region.
Despite its low hazard potential, Rainwater Lake Dam is regularly inspected, with the last inspection conducted in January 2017. The dam is classified as having a moderate risk level, indicating the importance of ongoing risk management measures. The dam features an uncontrolled spillway type and outlet gates, ensuring efficient water flow and safety mechanisms in place. With its serene setting and recreational opportunities, Rainwater Lake Dam continues to be a valuable asset for water resource and climate enthusiasts in the Blackjack area.
Managed by the Natural Resources Conservation Service, Rainwater Lake Dam represents a collaborative effort in water conservation and environmental stewardship. The dam's earth construction and buttress core type highlight its sustainable design, while the lack of state regulation underscores the private ownership and management of the facility. Overall, Rainwater Lake Dam stands as a testament to the importance of responsible water resource management and the role of dams in supporting both recreational activities and ecological balance in the region.
Year Completed |
1974 |
Dam Length |
565 |
Dam Height |
21.2 |
River Or Stream |
UNKNOWN |
Primary Dam Type |
Earth |
Surface Area |
11 |
Hydraulic Height |
16.1 |
Drainage Area |
400 |
Nid Storage |
126 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
21 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Line Creek Near Senoia
|
24cfs |
Flint River Near Griffin
|
341cfs |
Shoal Creek At Shoal Creek Rd
|
17cfs |
New River At Ga 100
|
88cfs |
Yellowjacket Cr At Hammett Rd Blw Hogansville
|
64cfs |
Flint River Near Lovejoy
|
95cfs |
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.
Rainwater Lake Dam