Lethco Lake Dam Reservoir Report
Last Updated: December 5, 2025
Lethco Lake Dam, located in Mills, Texas, is a private-owned structure built in 1975 for water supply purposes.
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Summary
Standing at 25 feet high with a length of 440 feet, this Earth-type dam on Pompey Creek has a storage capacity of 85 acre-feet. Despite its relatively small size, the dam plays a crucial role in providing water to the surrounding area.
With no spillway and a hazard potential rated as "Not Available," the dam's condition remains unrated, posing a potential risk that has been classified as high. The lack of information on inspections and emergency preparedness raises concerns about the safety and maintenance of the structure. Water resource and climate enthusiasts may find interest in advocating for increased oversight and maintenance to ensure the long-term stability and functionality of Lethco Lake Dam for the community it serves.
The Fort Worth District of the US Army Corps of Engineers does not have jurisdiction over Lethco Lake Dam, leaving the responsibility of regulation and enforcement to the state of Texas. With limited information on inspections, emergency response plans, and risk management measures, there is a need for greater transparency and accountability in ensuring the safety and reliability of this essential water supply infrastructure. As advocates for sustainable water resource management, enthusiasts may seek to engage with local authorities to address the potential risks associated with the dam and promote proactive measures to safeguard the surrounding ecosystem and community.
Year Completed |
1975 |
Dam Length |
440 |
Dam Height |
25 |
River Or Stream |
POMPEY CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
85 |
Structural Height |
25 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Pecan Bayou Nr Mullin
|
2cfs |
Leon Rv Nr Hasse
|
2cfs |
Copperas Ck At Fm 2247 Nr Comanche
|
2cfs |
Colorado Rv Nr San Saba
|
211cfs |
San Saba Rv At San Saba
|
140cfs |
Sabana Rv Nr De Leon
|
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.
Lethco Lake Dam