Hirsch Estate Lake No 1 Dam Reservoir Report
Nearby: Flores Lake Dam Killam Lake No 1 Dam
Last Updated: December 5, 2025
Hirsch Estate Lake No 1 Dam, located in Webb County, Texas, was completed in 1979 and serves as a private water resource for the surrounding area.
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Summary
The dam is primarily used for purposes other than flood control or hydroelectric power generation, with a maximum storage capacity of 271 acre-feet and a normal storage capacity of 87 acre-feet. The dam stands at a height of 11 feet and has a length of 1850 feet, holding back the waters of Juanita Creek.
Despite being privately owned, the dam is regulated by the state of Texas through permitting and inspection processes. It is classified as an earth dam with a buttress core type and is designed without a spillway. The risk assessment for the dam is considered high, indicating potential hazards that need to be managed. The condition assessment of the dam is currently not rated, highlighting the need for regular monitoring and maintenance to ensure its structural integrity and safety for the community and environment.
Year Completed |
1979 |
Dam Length |
1850 |
Dam Height |
11 |
River Or Stream |
JUANITA CREEK |
Primary Dam Type |
Earth |
Surface Area |
30 |
Hydraulic Height |
11 |
Nid Storage |
271 |
Structural Height |
11 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
11 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Rio Grande At Laredo
|
1760cfs |
Zacate Ck At Laredo
|
0cfs |
San Casimiro Ck Nr Freer
|
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.
Hirsch Estate Lake No 1 Dam