Coastal Lumber Co. Lake Dam #3 Reservoir Report
Last Updated: December 5, 2025
Coastal Lumber Co.
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Summary
Lake Dam #3, also known as Dubarco INC. Lake Dam, is a private earth dam located in Decatur, Georgia. Built in 1940, this dam serves primarily for recreational purposes, providing a storage capacity of 88.5 acre-feet with a normal storage level of 57 acre-feet. The dam has a height of 16.4 feet and a length of 370 feet, encompassing a surface area of 9.5 acres and draining a watershed area of 590 acres.
Despite being unregulated by the state, Coastal Lumber Co. Lake Dam #3 has a low hazard potential and has not been rated for its condition assessment. The last inspection of the dam was conducted in 1986, and it is categorized as having a moderate risk level. The dam features an uncontrolled spillway and outlet gates, with no associated locks or modifications over the years. While the emergency action plan and risk management measures are not specified, the dam is noted for its recreational value and relatively low risk profile.
Located within the Savannah District of the US Army Corps of Engineers, Coastal Lumber Co. Lake Dam #3 stands as a testament to the historical significance and engineering ingenuity of early 20th-century dam construction. With its tranquil setting and vital role in water resource management, this dam serves as a reminder of the delicate balance between human development and environmental stewardship in a changing climate.
Year Completed |
1940 |
Dam Length |
370 |
Dam Height |
16.4 |
River Or Stream |
UNKNOWN |
Primary Dam Type |
Earth |
Surface Area |
9.5 |
Hydraulic Height |
14.8 |
Drainage Area |
590 |
Nid Storage |
88.5 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
16 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Attapulgus Creek At Attapulgus
|
24cfs |
Ochlockonee River Nr Concord
|
79cfs |
Flint River At Bainbridge
|
4570cfs |
Little River Nr Quincy
|
101cfs |
Ochlockonee River Nr Havana
|
61cfs |
Little River Nr Midway
|
94cfs |
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.
Coastal Lumber Co. Lake Dam #3