Lavon Bluff Dam Reservoir Report

Last Updated: December 5, 2025

Lavon Bluff Dam, located in Collin County, Texas, is a privately owned structure regulated by the Texas Commission on Environmental Quality (TCEQ).


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Summary

Standing at a height of 18 feet and with a total length of 1090 feet, the dam serves a primary purpose that is classified as "Other" and is of a unique design known as a Buttress dam. The dam has a storage capacity of 430 acre-feet, with normal storage levels reaching 260 acre-feet.

Despite its significant storage capacity, the dam's condition assessment is listed as "Poor," indicating a need for maintenance and potential upgrades to ensure its continued safety and functionality. The dam has an uncontrolled spillway with a width of 104 feet, and its hazard potential is currently labeled as "Not Available." The risk assessment for the dam is considered moderate, highlighting the importance of ongoing monitoring and management to mitigate potential hazards and ensure the safety of the surrounding area.

Water resource and climate enthusiasts are likely to be interested in Lavon Bluff Dam due to its unique design and the challenges it faces in maintaining its structural integrity. The dam's location in Texas, a state prone to extreme weather events, underscores the importance of proper maintenance and oversight to protect against potential risks. With its current condition assessment categorized as "Poor," there is a pressing need for attention and resources to address any vulnerabilities and ensure the continued functionality of this vital water resource infrastructure.

Dam Length

1090

Dam Height

18

River Or Stream

Primary Dam Type

Other

Hydraulic Height

18

Nid Storage

430

Structural Height

18

Outlet Gates

Uncontrolled - 2

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

18
       
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.