Williams Dam 3 Reservoir Report
Nearby: Williams Dam 2 Williams Dam
Last Updated: December 6, 2025
Williams Dam 3, located in Atascosa, Texas, is a privately owned structure with a primary purpose of recreation.
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Summary
Built in 1967 by USDA NRCS, this earth dam stands at 13 feet tall and spans 312 feet in length. With a maximum storage capacity of 56 acre-feet and serving multiple purposes such as fire protection and stock ponds, Williams Dam 3 plays a vital role in the local ecosystem.
The dam, situated on the Oak Hollow stream, is designed with an uncontrolled spillway and outlet gates. Despite its low hazard potential, the risk assessment indicates a moderate risk level. The dam's condition assessment is currently not available, but it is regularly monitored to ensure its integrity and safety. In the event of an emergency, the dam does not have an Emergency Action Plan prepared, highlighting a potential area for improvement in the future.
For water resource and climate enthusiasts, Williams Dam 3 offers a fascinating case study in dam construction and management. Its location in Campbellton, Texas, provides a serene backdrop for recreational activities while serving important functions for the local community. With its historical significance dating back to the late 1960s, this earth dam continues to play a crucial role in water storage, wildlife conservation, and recreational enjoyment in the region.
Year Completed |
1967 |
Dam Length |
312 |
Dam Height |
13 |
River Or Stream |
Oak Hollow |
Primary Dam Type |
Earth |
Surface Area |
9 |
Hydraulic Height |
13 |
Drainage Area |
1.52 |
Nid Storage |
56 |
Structural Height |
14 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
14 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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 3