Alto Correctional Institute Water Supply Lake Dam Reservoir Report
Last Updated: December 5, 2025
Located in Banks, Georgia, the Alto Correctional Institute Water Supply Lake Dam stands as a crucial structure for water resource management in the area.
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Summary
Built in 1930, this Earth type dam spans 238 feet in length and reaches a height of 39 feet, primarily serving the purpose of water supply. With a storage capacity of 35 acre-feet and a drainage area of 115 square miles, this dam plays a key role in regulating water flow and ensuring a stable water supply for the region.
Managed by the state of Georgia, this dam has a low hazard potential and a moderate risk assessment, indicating its importance in mitigating potential risks related to water supply and infrastructure. Although last inspected in 2012, with an inspection frequency of 5 years, the dam's condition assessment is currently labeled as "Not Rated." Despite this, the Alto Correctional Institute Water Supply Lake Dam remains a vital component of the region's water infrastructure, contributing to water security and resource management efforts in the area.
With a spillway type labeled as "Uncontrolled" and an outlet gate system also marked as "Uncontrolled," this dam relies on natural flow patterns to manage water levels and prevent overflow. While the risk assessment indicates a moderate level of risk, the overall condition of the dam is not specifically rated. As a significant water resource structure in the region, continued monitoring and maintenance of the Alto Correctional Institute Water Supply Lake Dam are essential to ensure its effectiveness in providing a reliable water supply and safeguarding against potential hazards.
Year Completed |
1930 |
Dam Length |
238 |
Dam Height |
39 |
River Or Stream |
UNKNOWN |
Primary Dam Type |
Earth |
Surface Area |
2 |
Hydraulic Height |
19 |
Drainage Area |
115 |
Nid Storage |
35 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
39 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Chattahoochee River Near Cornelia
|
399cfs |
Chattahoochee River Near Leaf
|
230cfs |
Chattahoochee River At Helen
|
86cfs |
Chestatee River Near Dahlonega
|
191cfs |
Tallulah River Ab Powerhouse
|
45cfs |
Middle Oconee River Near Arcade
|
269cfs |
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.
Alto Correctional Institute Water Supply Lake Dam