Wood Hollow Dam Reservoir Report

Last Updated: December 5, 2025

Wood Hollow Dam, located in Travis County, Texas, is a key structure managed by the City of Austin for fire protection and stock maintenance along Shoal Creek.


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Summary

Completed in 1979, this earth dam stands at 33 feet high and stretches 344 feet in length, with a storage capacity of 68 acre-feet. With a spillway width of 50 feet and a maximum discharge of 3305 cubic feet per second, the dam serves as a crucial asset for water resource management in the region.

Despite being rated as having a moderate risk level, Wood Hollow Dam has not been assessed for its current condition. The dam's two uncontrolled outlet gates and unlisted foundation type raise questions about its long-term stability and maintenance needs. The last inspection in 2015 highlighted the importance of regular monitoring and risk management measures to ensure the safety and effectiveness of this vital infrastructure for the local community and surrounding areas. As a significant structure along Shoal Creek, Wood Hollow Dam plays a critical role in water resource management and climate resilience efforts in the region.

Year Completed

1979

Dam Length

344

Dam Height

33

River Or Stream

TR-SHOAL CREEK

Primary Dam Type

Earth

Hydraulic Height

33

Drainage Area

0.6

Nid Storage

68

Structural Height

33

Outlet Gates

Uncontrolled - 2

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

33
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.