Cox Lake Dam Reservoir Report
Last Updated: December 5, 2025
Located in Navarro, Texas, Cox Lake Dam stands as a vital structure for water resource and climate enthusiasts.
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Summary
Built in 1951, this private dam serves primarily for recreational purposes, but also plays a role in water supply. With a height of 30 feet and a length of 900 feet, it has a storage capacity of 300 acre-feet and covers a surface area of 16 acres. Despite lacking a spillway, it provides essential water management for Rush Creek.
Cox Lake Dam, situated in the Fort Worth District, has a buttress core type and an earth foundation. While its hazard potential and condition assessment remain ungraded, the risk assessment deems it as having a high risk level. With one outlet gate and no associated structures, the dam's regulatory oversight falls to the state, which enforces inspection and permitting requirements. The dam's proximity to Rush Creek highlights its importance in flood control and water conservation efforts in the region.
For water resource and climate enthusiasts, Cox Lake Dam in Texas presents an intriguing case study of a privately-owned structure with public utility. As a key element in the management of Rush Creek, this dam not only facilitates recreation but also supports water supply needs in the region. With its design and construction dating back to the mid-20th century, the dam serves as a testament to the ongoing challenges and opportunities in balancing environmental conservation with human development in a changing climate.
Year Completed |
1951 |
Dam Length |
900 |
Dam Height |
30 |
River Or Stream |
TR-RUSH CREEK |
Primary Dam Type |
Earth |
Surface Area |
16 |
Hydraulic Height |
30 |
Nid Storage |
300 |
Structural Height |
30 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Richland Ck Nr Dawson
|
5cfs |
Chambers Ck At Fm 55 Nr Avalon
|
12cfs |
Chambers Ck Nr Rice
|
15cfs |
Waxahachie Ck Nr Bardwell
|
1cfs |
White Rk Ck At Fm 308 Nr Irene
|
515cfs |
Richland Ck At Hwy 22 Nr Mertens
|
338cfs |
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.
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