Frank Nunley Lake Dam Reservoir Report
Last Updated: December 6, 2025
Frank Nunley Lake Dam, located in Webb County, Texas, was completed in 1979 with a primary purpose of "Other." This privately owned Earth dam stands at a height of 13 feet and has a length of 1000 feet, providing a storage capacity of 385 acre-feet.
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Summary
Despite its small size, the dam poses a high risk, with a hazard potential of "Not Available" and a risk assessment rating of 2 out of 5.
Situated on the Los Olmos Creek, Frank Nunley Lake Dam does not have a spillway and is not regulated by the state. The dam is primarily used for purposes not specified in the data, and it has not been rated for its condition. With no emergency action plan or inundation maps prepared, the dam's risk management measures remain unknown. While the dam may not capture headlines like larger structures, the unique characteristics and lack of detailed information surrounding Frank Nunley Lake Dam make it an intriguing point of interest for water resource and climate enthusiasts.
Despite the limited data available, the unique design and characteristics of Frank Nunley Lake Dam present an opportunity for further exploration and analysis by water resource and climate enthusiasts. With its location in a high-risk area and lack of comprehensive risk management measures, the dam serves as a reminder of the importance of proper infrastructure maintenance and emergency preparedness in the face of changing climate conditions. As efforts to address water resource challenges continue, Frank Nunley Lake Dam stands as a captivating case study for those interested in the intersection of water management, climate resilience, and infrastructure safety.
Year Completed |
1979 |
Dam Length |
1000 |
Dam Height |
13 |
River Or Stream |
LOS OLMOS CREEK |
Primary Dam Type |
Earth |
Surface Area |
16 |
Hydraulic Height |
13 |
Nid Storage |
385 |
Structural Height |
13 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
13 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
San Casimiro Ck Nr Freer
|
0cfs |
Nueces Rv At Cotulla
|
0cfs |
Zacate Ck At Laredo
|
0cfs |
Rio Grande At Laredo
|
1760cfs |
Nueces Rv Nr Tilden
|
0cfs |
Nueces Rv Nr Asherton
|
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.
Frank Nunley Lake Dam