Alcoa Lake Dam Reservoir Report
Nearby: E Area End Lake Dam Voss Lake Dam
Last Updated: December 25, 2025
Alcoa Lake Dam, located in Milam County, Texas, is a privately owned earth dam that was completed in 1952.
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Summary
Standing at a height of 54 feet, with a hydraulic height of 53 feet and a structural height of 58 feet, the dam plays a crucial role in regulating the flow of Sandy Creek. The dam boasts a storage capacity of 19,600 acre-feet, with a normal storage level of 15,650 acre-feet, covering a surface area of 913 acres.
Managed by the Texas Commission on Environmental Quality (TCEQ), Alcoa Lake Dam has undergone structural modifications in 2012 to ensure its continued safety and functionality. The dam features various outlet gates, including slide gates and tainter gates, to control water release. With a maximum discharge capacity of 34,500 cubic feet per second, the dam serves as a vital component in managing water resources and mitigating flood risks in the region. Despite not having a hazard potential rating or condition assessment, the dam remains a key infrastructure for water resource and climate enthusiasts to study and monitor.
As a significant landmark in the Galveston District, Alcoa Lake Dam stands as a testament to the engineering expertise of its designers, Bullock, Bennett, & Associates, and EBASCO Services Inc. The dam's role in water management and its impact on the surrounding ecosystem make it a fascinating subject for enthusiasts interested in understanding the intersection of water resources and climate in Texas.
Years Modified |
2012 - Structural |
Year Completed |
1952 |
Dam Length |
5800 |
Dam Height |
54 |
River Or Stream |
SANDY CREEK |
Primary Dam Type |
Earth |
Surface Area |
913 |
Hydraulic Height |
53 |
Drainage Area |
6 |
Nid Storage |
19600 |
Structural Height |
58 |
Outlet Gates |
Other Controlled - 1, Slide (sluice gate) - 1, Tainter (radial) - 2, Uncontrolled - 1 |
Hazard Potential |
Not Available |
Foundations |
Soil |
Nid Height |
58 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Rv Nr Rockdale
|
156cfs |
San Gabriel Rv At Laneport
|
8cfs |
E Yegua Ck Nr Dime Box
|
1cfs |
Middle Yegua Ck Nr Dime Box
|
0cfs |
Little Rv At Cameron
|
159cfs |
Big Elm Ck At Sh 77 Nr Cameron
|
940cfs |
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.
Alcoa Lake Dam