Trinity Falls Pond D Weir Dam Reservoir Report

Last Updated: December 5, 2025

Trinity Falls Pond D Weir Dam is a recently completed earth dam located in Collin County, Texas, along the Tributary East Fork Trinity River.


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Summary

The dam, with a height of 13.5 feet and a length of 680 feet, was designed by Kimley Horn & Associates Inc and serves a primary purpose different from the typical water retention projects. Despite its relatively small storage capacity of 34 acre-feet, the dam plays a crucial role in managing stormwater runoff in the area, with a maximum discharge capacity of 4784 cubic feet per second.

This dam is regulated by the Texas Commission on Environmental Quality (TCEQ) and undergoes regular inspections to ensure its safety and functionality. The most recent inspection in February 2018 deemed the dam's condition satisfactory, with a moderate hazard potential assigned. The uncontrolled spillway, with a width of 378 feet, helps to manage excess water during heavy rainfall events. Trinity Falls Pond D Weir Dam not only serves as a flood control measure but also contributes to the overall water resource management in the region, highlighting the importance of such infrastructure in mitigating the impacts of climate change on water systems.

Year Completed

2016

Dam Length

680

Dam Height

13.5

River Or Stream

TRIBUTARY EAST FORK TRINITY RIVER

Primary Dam Type

Earth

Hydraulic Height

13.5

Drainage Area

0.2

Nid Storage

34

Structural Height

21

Outlet Gates

Uncontrolled - 4

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

21
       
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.