Hensley Bros. Irrigation Pond Reservoir Report
Last Updated: December 6, 2025
Hensley Bros.
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Summary
Irrigation Pond, also known as Hensley Lake Dam, is a privately-owned earth dam located in Tattnall, Georgia. Built in 1952, this dam primarily serves the purpose of irrigation, with a storage capacity of 69 acre-feet and a surface area of 11 acres. The dam stands at a height of 12 feet and spans a length of 635 feet, supporting a low hazard potential with a moderate risk assessment rating.
Situated in the Savannah District and overseen by the state of Georgia, Hensley Bros. Irrigation Pond features an uncontrolled spillway and outlet gates. Despite being unregulated by the state, the dam has not been rated for its condition assessment, highlighting the need for further inspection and assessment. With a drainage area of 130 acres and a normal storage capacity of 42 acre-feet, this dam plays a crucial role in supporting local irrigation needs and managing water resources in the region.
For water resource and climate enthusiasts, Hensley Bros. Irrigation Pond offers a fascinating example of a private earth dam designed for irrigation purposes. With its historical significance dating back to 1952, the dam presents an opportunity for further research and evaluation in terms of its structural integrity and risk management measures. As a key feature in the landscape of Tattnall, Georgia, this dam serves as a reminder of the importance of sustainable water management practices in the face of changing climate conditions.
Year Completed |
1952 |
Dam Length |
635 |
Dam Height |
12 |
River Or Stream |
UNKNOWN |
Primary Dam Type |
Earth |
Surface Area |
11 |
Drainage Area |
130 |
Nid Storage |
69 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
12 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Canoochee River Near Claxton
|
16cfs |
Ohoopee River Near Reidsville
|
105cfs |
Altamaha River Near Baxley
|
3480cfs |
Ogeechee River At Rocky Ford Rd
|
557cfs |
Oconee River Near Mount Vernon
|
2230cfs |
Black Creek Near Blitchton
|
9cfs |
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.
Mercer Pond Dam