Guerro Lake Dam Reservoir Report
Nearby: Tx No Name No 54 Dam Munoz Lake Dam
Last Updated: December 18, 2025
Guerro Lake Dam, located in Starr, Texas, was completed in 1964 and stands at a height of 14 feet with a length of 990 feet.
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Summary
This private earth dam on TR-ARROYO GRANDE serves a primary purpose of "Other" and has a normal storage capacity of 32 acre-feet. The dam is not regulated by the state and has not been rated for its condition assessment.
Despite its small size, Guerro Lake Dam poses a high risk (2) according to the data available. The dam has no spillway and one outlet gate, with no locks. The hazard potential and condition assessment of the dam are not available, and it is not clear if emergency preparedness measures are in place. The risk management measures for the dam are also unknown.
With a fascinating mix of limited information and high risk potential, Guerro Lake Dam is a mysterious structure that warrants further investigation from water resource and climate enthusiasts. As a privately owned dam with no state regulation, its condition, hazard potential, and emergency preparedness remain uncertain, making it an intriguing case study in dam safety and management.
Year Completed |
1964 |
Dam Length |
990 |
Dam Height |
14 |
River Or Stream |
TR-ARROYO GRANDE |
Primary Dam Type |
Earth |
Surface Area |
10 |
Hydraulic Height |
14 |
Nid Storage |
207 |
Structural Height |
14 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
14 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Rio Grande At Ft Ringgold
|
2110cfs |
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.
Guerro Lake Dam