Alexander Lake No 3 Dam Reservoir Report
Last Updated: December 5, 2025
Alexander Lake No 3 Dam, located in La Salle, Texas, was completed in 1964 and serves as a vital water supply infrastructure for the region.
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Summary
This private-owned Earth dam stands at a height of 12 feet and has a length of 1850 feet, with a storage capacity of 211 acre-feet. The dam is situated on the TR-GREEN BRANCH river and falls under the jurisdiction of the Galveston District.
Despite being privately owned, the dam is regulated by the state with permitting and inspection requirements in place. The structure has not been rated for its condition, but it poses a high risk with a hazard potential of 2 on a scale. Although there is no spillway, the dam is equipped with one outlet gate. The last inspection was conducted in 1978, and there is no information on the frequency of future inspections or emergency preparedness measures in place. Water resource and climate enthusiasts would find Alexander Lake No 3 Dam an intriguing subject for further exploration and analysis.
Year Completed |
1964 |
Dam Length |
1850 |
Dam Height |
12 |
River Or Stream |
TR-GREEN BRANCH |
Primary Dam Type |
Earth |
Surface Area |
12 |
Hydraulic Height |
12 |
Nid Storage |
211 |
Structural Height |
12 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
12 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Nueces Rv Nr Tilden
|
0cfs |
Frio Rv At Tilden
|
0cfs |
Nueces Rv At Cotulla
|
0cfs |
San Casimiro Ck Nr Freer
|
0cfs |
San Miguel Ck Nr Tilden
|
0cfs |
Frio Rv Nr Derby
|
0cfs |
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.
Alexander Lake No 3 Dam