Grinages Lake Dam Reservoir Report
Nearby: Mccord Lake Dam Willow Pond Dam
Last Updated: February 21, 2026
Grinages Lake Dam, also known as Mccord South Dam, is a private-owned structure located in Fayetteville, Georgia.
Summary
Built in 1968, this earth dam stands at a height of 27 feet and spans a length of 380 feet. With a primary purpose of recreation, the dam offers a surface area of 9 acres and a storage capacity of 113 acre-feet. Although the dam is not regulated by the state, it undergoes regular inspections, with the last one conducted in May 2015.
The dam's low hazard potential and moderate risk assessment make it a relatively safe structure, despite being uncontrolled in terms of spillway type and outlet gates. The surrounding area, including Grinages Lake, provides a serene recreational environment for visitors to enjoy water-based activities. Not rated for its condition assessment, the dam serves as a vital component for water resource management in the region, showcasing the importance of sustainable infrastructure in the face of climate change challenges.
For water resource and climate enthusiasts, Grinages Lake Dam offers a fascinating case study of a privately-owned earth dam that plays a crucial role in providing recreational opportunities while managing water storage in Fayetteville, Georgia. Its design and construction details, coupled with its operational aspects and risk assessment, highlight the significance of maintaining and monitoring such structures to ensure their safety and effectiveness in the face of evolving environmental conditions.
°F
°F
mph
Wind
%
Humidity
15-Day Weather Outlook
Year Completed |
1968 |
Dam Length |
380 |
Dam Height |
27 |
River Or Stream |
UNKNOWN |
Primary Dam Type |
Earth |
Surface Area |
9 |
Hydraulic Height |
21.2 |
Nid Storage |
113 |
Structural Height |
21.2 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
27 |
Seasonal Comparison
5-Day Hourly Forecast Detail
Nearby Streamflow Levels
Line Creek Near Senoia
|
90cfs |
Flint River Near Lovejoy
|
85cfs |
Flint River Near Griffin
|
176cfs |
Shoal Creek At Shoal Creek Rd
|
11cfs |
Pates Creek At Buster Lewis Rd Near Flippen
|
23cfs |
Chattahoochee River Near Fairburn
|
1690cfs |
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.
Grinages Lake Dam
Peachtree Parkway 488, Shake Rag