Nunley Lake No 1 Dam Reservoir Report
Nearby: Nunley Lake No 2 Dam Coyote Lake Dam
Last Updated: December 5, 2025
Nunley Lake No 1 Dam, located in Frio Town, Texas, was completed in 1970 and serves as a vital water supply infrastructure in the area.
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Summary
This private-owned dam has a primary purpose of water supply and stands at a height of 15 feet with a length of 1600 feet. With a storage capacity of 350 acre-feet, the dam ensures a reliable water source for the surrounding community.
Despite being a privately owned structure, Nunley Lake No 1 Dam is subject to state permitting, inspection, and enforcement. The dam is classified as an Earth dam type with a Buttress core, designed to withstand hydraulic pressures and provide efficient water storage. The risk assessment for the dam is rated as high (2), highlighting the importance of regular monitoring and maintenance to ensure the safety and integrity of the structure.
With no spillway and limited information on its condition assessment, Nunley Lake No 1 Dam presents a significant risk factor in the event of a catastrophic event. As water resource and climate enthusiasts, it is crucial to advocate for improved monitoring and management measures to mitigate potential hazards and ensure the sustainable use of this essential water supply infrastructure.
Year Completed |
1970 |
Dam Length |
1600 |
Dam Height |
15 |
River Or Stream |
TR-EAST ELM CREEK |
Primary Dam Type |
Earth |
Surface Area |
43 |
Hydraulic Height |
15 |
Nid Storage |
350 |
Structural Height |
15 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Nunley Lake No 1 Dam