Mcmannis Lake Dam Reservoir Report
Last Updated: December 5, 2025
Mcmannis Lake Dam, located in Cuero, Texas, was completed in 1960 by the USDA NRCS and serves multiple purposes, including fire protection, stock, and small fish pond management.
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Summary
The earth dam stands at a height of 15 feet and has a length of 792 feet, providing a storage capacity of 104 acre-feet. With a surface area of 8.6 acres, the dam plays a crucial role in water resource management in the region.
Despite not being regulated by the state, Mcmannis Lake Dam poses a high risk due to its hazard potential being classified as "Not Available." The dam lacks a spillway and has limited emergency preparedness measures in place, raising concerns for potential flooding and safety risks in the event of a breach. Climate enthusiasts and water resource professionals may find interest in monitoring and assessing the condition of the dam to ensure its continued safety and effectiveness in water management.
With its location on TR-Denton Creek, Mcmannis Lake Dam is a key infrastructure for the local community, providing essential water resources for agriculture, fire protection, and recreational purposes. As climate change continues to impact water availability and quality, the maintenance and monitoring of dams like Mcmannis Lake Dam become increasingly important to ensure sustainable water management practices in the face of evolving climate challenges.
Year Completed |
1960 |
Dam Length |
792 |
Dam Height |
15 |
River Or Stream |
TR-DENTON CREEK |
Primary Dam Type |
Earth |
Surface Area |
8.6 |
Hydraulic Height |
15 |
Nid Storage |
104 |
Structural Height |
15 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Guadalupe Rv At Hwy 183 Nr Hochheim
|
216cfs |
Sandies Ck Nr Westhoff
|
0cfs |
Guadalupe Rv At Gonzales
|
214cfs |
Peach Ck Bl Dilworth
|
0cfs |
Guadalupe Rv At Cr 143 Nr Gonzales
|
125cfs |
Guadalupe Rv At Cuero
|
280cfs |
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.
Mcmannis Lake Dam