Williams Dam Reservoir Report
Nearby: Haynie Dam Kemp Lake Dam
Last Updated: December 5, 2025
Williams Dam, located in Henderson, Texas, was completed in 1984 and serves multiple purposes including fire protection, stock, and a small fish pond.
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Summary
This private earth dam stands at a height of 10 feet with a length of 760 feet, holding a maximum storage capacity of 39 acre-feet. The dam is situated on a tributary of Persimmon Branch and is regulated by the state of Texas.
Despite being uncontrolled, the dam features two outlet gates and a spillway width of 30 feet. The last inspection was conducted in February 2011, with a moderate risk assessment rating. While the condition assessment is not rated, the dam is considered to have a hazard potential that is not available. With its picturesque location and importance for local water resources, Williams Dam remains an essential structure for the community, showcasing the intersection of human engineering and environmental conservation.
Year Completed |
1984 |
Dam Length |
760 |
Dam Height |
10 |
River Or Stream |
TRIB. OF PERSIMMON BRANCH |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
10 |
Drainage Area |
0.9 |
Nid Storage |
39 |
Structural Height |
10 |
Outlet Gates |
Uncontrolled - 2 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
10 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Trinity Rv At W Cedar Creek Pkwy Nr Dosser
|
2000cfs |
Cedar Ck Nr Kemp
|
15cfs |
Trinity Rv Nr Rosser
|
1750cfs |
Kings Ck At Sh 34 Nr Kaufman
|
15cfs |
Trinity Rv At Trinidad
|
2210cfs |
Chambers Ck Nr Rice
|
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.
Williams Dam