Slyder Lake Dam Reservoir Report
Last Updated: December 6, 2025
Slyder Lake Dam, located in Dimmit, Texas, was completed in 1940 and serves as a crucial water supply source in the region.
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Summary
This private-owned Earth dam stands at a height of 13 feet and has a length of 650 feet, with a storage capacity of 390 acre-feet. Despite its age, the dam is still in operation and regularly inspected for safety and maintenance, with no reported regulatory violations.
With its primary purpose being water supply, Slyder Lake Dam plays a vital role in providing water to the surrounding area. Although it does not have a spillway, the dam has an outlet gate for water release. This dam on the TR-TORTUGAS CREEK is managed by the Fort Worth District and does not pose a high hazard potential. However, it is categorized as having a high risk assessment level of 2, indicating the need for continued monitoring and risk management measures to ensure the safety and integrity of the structure.
Year Completed |
1940 |
Dam Length |
650 |
Dam Height |
13 |
River Or Stream |
TR-TORTUGAS CREEK |
Primary Dam Type |
Earth |
Surface Area |
30 |
Hydraulic Height |
13 |
Nid Storage |
390 |
Structural Height |
13 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
13 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Nueces Rv Nr Asherton
|
0cfs |
Nueces Rv At Cotulla
|
0cfs |
Frio Rv Nr Derby
|
0cfs |
Leona Rv Nr Uvalde
|
0cfs |
Nueces Rv Bl Uvalde
|
1cfs |
Frio Rv Bl Dry Frio Rv Nr Uvalde
|
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.
Slyder Lake Dam