Green House Lake Dam Reservoir Report
Last Updated: December 6, 2025
Green House Lake Dam, also known as O'Boyle Lake Dam #1, is a state-owned structure located in Jasper County, Georgia.
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Summary
Completed in 1958, this earth dam stands at a height of 25 feet and serves primarily for recreational purposes, providing a serene environment for water resource and climate enthusiasts to enjoy. The dam has a normal storage capacity of 53 acre-feet, with a total storage of 68 acre-feet and a surface area of 6 acres.
Situated in Maxwell, Georgia, Green House Lake Dam has a low hazard potential and is categorized as having a moderate risk level. The dam features an uncontrolled spillway type and outlet gates, with an inspection frequency of every 5 years. Although the condition assessment is currently listed as "not rated," the dam is regularly inspected to ensure the safety and integrity of the structure. With its picturesque location and recreational opportunities, Green House Lake Dam is a must-visit destination for those interested in water resources and the effects of climate on dam structures.
While Green House Lake Dam has not been modified in recent years, it remains a focal point for water enthusiasts in the area. The dam's designer, O'Boyle, implemented a buttress core type design for added stability. With its location in Jasper County and close proximity to the city of Maxwell, the dam offers visitors a chance to appreciate the intersection of human engineering and natural beauty. As a state-regulated structure with a focus on recreation, Green House Lake Dam serves as a valuable resource for both locals and visitors seeking to explore the impact of water resources and climate on dam infrastructure.
Year Completed |
1958 |
Dam Length |
237 |
Dam Height |
25 |
River Or Stream |
UNKNOWN |
Primary Dam Type |
Earth |
Surface Area |
6 |
Hydraulic Height |
18 |
Drainage Area |
71 |
Nid Storage |
68 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Alcovy River Below Covington
|
229cfs |
Alcovy River Above Covington
|
183cfs |
Ocmulgee River Near Jackson
|
895cfs |
Big Haynes Creek At Bald Rock Road
|
58cfs |
Yellow River At Gees Mill Road
|
409cfs |
Little River Near Eatonton
|
126cfs |
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.
Green House Lake Dam