Foster Lake No 1 Dam Reservoir Report
Last Updated: December 5, 2025
Foster Lake No 1 Dam, located in Erath, Texas, was completed in 1970 and serves primarily for recreation and water supply purposes.
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Summary
The dam, standing at 31 feet tall with a length of 1100 feet, holds a storage capacity of 105 acre-feet and covers a surface area of 6.7 acres. Situated on the TR-Paluxy River, the dam is classified as an earth type structure with a buttress core design.
Despite its recreational importance, Foster Lake No 1 Dam lacks certain safety features such as a spillway and has not been rated for its condition assessment. The hazard potential is marked as "Not Available" with a high risk assessment rating of 2. The dam is privately owned and maintained, with no federal or state regulatory oversight. While it does not fall under state jurisdiction, it is subject to state permitting and inspection requirements.
Overall, Foster Lake No 1 Dam presents an intriguing case study for water resource and climate enthusiasts due to its unique design characteristics and limited safety features. As a privately-owned structure with high risk potential, it highlights the need for thorough monitoring and maintenance practices to ensure the safety of the surrounding community and the sustainability of the water supply it provides.
Year Completed |
1970 |
Dam Length |
1100 |
Dam Height |
31 |
River Or Stream |
TR-PALUXY RIVER |
Primary Dam Type |
Earth |
Surface Area |
6.7 |
Hydraulic Height |
31 |
Nid Storage |
105 |
Structural Height |
31 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Paluxy Rv At Glen Rose
|
10cfs |
N Bosque Rv At Hico
|
6cfs |
Brazos Rv Nr Dennis
|
115cfs |
Brazos Rv Nr Glen Rose
|
31cfs |
Leon Rv Nr De Leon
|
0cfs |
Brazos Rv Ds Lk Granbury Nr Granbury
|
15cfs |
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.
Foster Lake No 1 Dam