Robert Wheeler Lake No 3 Dam Reservoir Report
Last Updated: December 5, 2025
Robert Wheeler Lake No 3 Dam, located in McMullen County, Texas, is a privately owned earth dam that was completed in 1968 for the primary purpose of water supply.
°F
°F
mph
Wind
%
Humidity
Summary
Standing at a height of 14 feet with a length of 765 feet, the dam has a storage capacity of 290 acre-feet and a normal storage level of 65 acre-feet. The dam sits on the TR-Pertle Creek and is part of the Fort Worth District of the U.S. Army Corps of Engineers.
Despite being privately owned, the dam is subject to state permitting and inspection requirements, ensuring its structural integrity and safety. However, the dam does not have a spillway and is classified as having a high risk potential, which indicates a need for careful monitoring and management. The dam's hazard potential is listed as "Not Available," and its condition assessment is "Not Rated," highlighting the need for further evaluation and potential improvements to mitigate any risks associated with the structure.
For water resource and climate enthusiasts, Robert Wheeler Lake No 3 Dam presents an intriguing case study in dam infrastructure management. With its unique design features and location in a high-risk area, the dam serves as a reminder of the importance of maintaining and monitoring water supply structures to ensure the safety and security of communities that rely on them. As climate change continues to impact water resources, the significance of properly managing dams like Robert Wheeler Lake No 3 Dam becomes increasingly vital in securing a sustainable water future for all.
Year Completed |
1968 |
Dam Length |
765 |
Dam Height |
14 |
River Or Stream |
TR-PERTLE CREEK |
Primary Dam Type |
Earth |
Surface Area |
18 |
Hydraulic Height |
14 |
Nid Storage |
290 |
Structural Height |
14 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
14 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
San Miguel Ck Nr Tilden
|
0cfs |
Frio Rv At Tilden
|
0cfs |
Nueces Rv Nr Tilden
|
0cfs |
Atascosa Rv At Whitsett
|
0cfs |
Choke Canyon Res Owc Nr Three Rivers
|
33cfs |
Atascosa Rv Nr Mccoy
|
1cfs |
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.
Robert Wheeler Lake No 3 Dam