Chimneyhill Stormwater Holding Pond Reservoir Report

Last Updated: December 5, 2025

Located in Travis County, Texas, the Chimneyhill Stormwater Holding Pond is a private-owned structure designed to regulate stormwater runoff and provide recreational opportunities.


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Summary

Managed by the Texas Commission on Environmental Quality (TCEQ), this earth dam structure stands at a height of 26 feet and has a storage capacity of 40 acre-feet. With a risk assessment rating of "High (2)", the pond serves as a crucial resource in managing flood risks and maintaining water quality in the area.

Built off the Walnut Creek, the Chimneyhill Stormwater Holding Pond does not have a spillway and features one outlet gate. Although the structure was last inspected in 1991 and is not currently rated for condition assessment, it continues to play a significant role in flood control and recreation activities in the region. While the exact completion date and construction details are unavailable, the pond's primary purpose of recreation highlights its importance for both environmental conservation and community engagement.

As water resource and climate enthusiasts explore the Chimneyhill Stormwater Holding Pond, its strategic location and regulatory oversight by the TCEQ underscore its role in managing stormwater runoff and enhancing recreational opportunities. Despite its age and lack of recent inspections, the pond remains a vital asset for flood control and water quality management in Travis County. With ongoing risk management measures and potential enhancements, this structure continues to demonstrate its importance in balancing environmental protection and community recreation.

Dam Height

26

River Or Stream

OFF CH-WALNUT CREEK

Primary Dam Type

Earth

Hydraulic Height

26

Nid Storage

40

Structural Height

26

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

26
       
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.