Smyth Dam Reservoir Report
Nearby: Smith Dam Smyth Lake Dam
Last Updated: December 12, 2025
Smyth Dam, located in Uvalde, Texas, was completed in 1928 and serves multiple purposes including fire protection, stock, and recreation.
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Summary
The earth dam, standing at 18 feet high with a length of 1850 feet, holds a maximum storage capacity of 3496 acre-feet of water from the Wood Slough river. The dam's spillway, with a width of 520 feet, is uncontrolled and has the capability to discharge up to 40440 cubic feet per second.
Despite being privately owned, Smyth Dam is regulated by the Texas Commission on Environmental Quality (TCEQ) and undergoes regular inspections and enforcement measures. The dam has not been rated for condition assessment, but its hazard potential is listed as not available. The risk assessment for Smyth Dam is moderate, with a DSAC risk rating of 3, indicating a potential for risk management measures to be implemented in the future. With its historical significance and importance for water resource management in the region, Smyth Dam remains a key feature for climate and water resource enthusiasts to explore and study.
Year Completed |
1928 |
Dam Length |
1850 |
Dam Height |
18 |
River Or Stream |
WOOD SLOUGH |
Primary Dam Type |
Earth |
Surface Area |
75 |
Hydraulic Height |
18 |
Drainage Area |
15 |
Nid Storage |
3496 |
Structural Height |
18 |
Outlet Gates |
Uncontrolled - 3 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
18 |
Seasonal Comparison
Weather Forecast
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.
Smyth Dam