Mountain Creek Dam Reservoir Report

Last Updated: December 5, 2025

Mountain Creek Dam, located in Dallas, Texas, is a private earth dam completed in 1936 with a height of 47 feet and a length of 8200 feet, impounding the waters of Mountain Creek.


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Summary

Managed by the Texas Commission on Environmental Quality (TCEQ), the dam serves multiple purposes, including flood control and water supply. With a storage capacity of 64,372 acre-feet and a maximum discharge of 128,502 cubic feet per second, the dam plays a crucial role in managing water resources in the region.

The dam features a controlled spillway with a width of 249 feet and outlet gates for water release. It underwent mechanical modifications in 1999 to enhance its operational efficiency. Despite being classified as having a very high risk potential, the dam's condition assessment in 2014 deemed it as satisfactory. Regular inspections are conducted every 5 years to ensure its structural integrity and safety. With its strategic location and significant storage capacity, Mountain Creek Dam remains a key infrastructure for water resource management and climate resilience in the area.

Overall, Mountain Creek Dam stands as a vital engineering feat in maintaining a balance between water regulation and environmental protection. As a focal point for water enthusiasts and climate advocates, the dam's role in mitigating flood risks and ensuring water supply highlights the importance of sustainable infrastructure development in the face of changing climate patterns. Its history, design, and operational features make it a noteworthy structure that underscores the intersection of water resource management and climate adaptation in the region.

Years Modified

1999 - Mechanical

Year Completed

1936

Dam Length

8200

Dam Height

47

River Or Stream

MOUNTAIN CREEK

Primary Dam Type

Earth

Surface Area

2880

Hydraulic Height

47

Drainage Area

295

Nid Storage

64372

Structural Height

47

Outlet Gates

Other Controlled - 1, Valve - 1

Hazard Potential

Not Available

Foundations

Soil

Nid Height

47
       
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.