Stonebridge Lake 12 Dam Reservoir Report

Last Updated: December 5, 2025

Stonebridge Lake 12 Dam, located in Collin County, Texas, was completed in 1988 and serves as a vital structure for flood risk reduction along the TR-Wilson Creek.


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Summary

Managed by a private owner, this earth dam stands at a height of 38 feet and spans 800 feet in length, with a maximum storage capacity of 193 acre-feet. The dam also supports irrigation and recreation activities in the area, showcasing its multi-purpose functionality.

With a spillway width of 127 feet and a maximum discharge capacity of 4,800 cubic feet per second, Stonebridge Lake 12 Dam is equipped to handle significant water flow during periods of heavy rainfall. Despite its satisfactory condition assessment as of September 2017, the dam is subject to regular inspections every 5 years to ensure its structural integrity. The risk assessment for the dam is moderate, indicating a level 3 hazard potential, although specific risk management measures are not detailed in the available data.

As part of the Fort Worth District, the dam falls under the regulatory authority of the Texas Commission on Environmental Quality (TCEQ), which oversees its permitting, inspection, and enforcement protocols. For water resource and climate enthusiasts, Stonebridge Lake 12 Dam presents a compelling case study of infrastructure designed to mitigate flood risks while supporting various water-related activities in the region.

Year Completed

1988

Dam Length

800

Dam Height

38

River Or Stream

TR-WILSON CREEK

Primary Dam Type

Earth

Surface Area

7.31

Hydraulic Height

38

Drainage Area

0.8

Nid Storage

193

Structural Height

38

Outlet Gates

Uncontrolled - 2

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

38
       
Seasonal Comparison

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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.