Monroe Lake Dam Reservoir Report

Last Updated: December 5, 2025

Monroe Lake Dam, located in Collin, Texas, was completed in 1961 by the USDA NRCS and serves as a crucial water resource for fire protection, stock, and recreational purposes.


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Summary

Standing at a height of 15 feet with a length of 522 feet, the earth dam is designed with buttress core types and supports the Muddy Creek. Despite its primary purpose for water management, the dam currently lacks a spillway and is not rated for condition assessment.

Owned privately, Monroe Lake Dam falls under the regulatory jurisdiction of the Texas Commission on Environmental Quality (TCEQ) and undergoes regular state inspections and enforcement. With a storage capacity of 60 acre-feet, the dam poses a high risk due to its lack of hazard potential information and emergency action plan preparedness. Despite these challenges, the dam continues to play a vital role in water resource management for the surrounding area.

As climate and water resource enthusiasts, there is a clear opportunity to advocate for improved risk management measures, including the development of an emergency action plan, hazard assessments, and condition ratings for Monroe Lake Dam. By working with state regulatory agencies and private owners, we can ensure the longevity and safety of this important water infrastructure in the face of changing climate conditions.

Year Completed

1961

Dam Length

522

Dam Height

15

River Or Stream

TR-MUDDY CREEK

Primary Dam Type

Earth

Hydraulic Height

15

Nid Storage

60

Structural Height

15

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

15
       
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.