Dacus Lake Dam Reservoir Report

Last Updated: December 6, 2025

Dacus Lake Dam, located in Brazoria, Texas, is a privately owned structure designed by Max L Hagan and completed in 1956.


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Summary

This earth dam stands at a height of 9 feet and spans a length of 5742 feet, with a primary purpose of providing fire protection, creating a stock or small fish pond, and offering recreational opportunities. The dam has a storage capacity of 439 acre-feet and covers a surface area of 49 acres, serving as a vital resource for water management in the area.

Managed by the Texas Commission on Environmental Quality (TCEQ), Dacus Lake Dam is subject to state regulation, permitting, inspection, and enforcement. The dam's condition assessment as of April 2021 is rated as 'fair', with a moderate risk level. The structure features an uncontrolled spillway and outlet gate, with a maximum discharge capacity of 29 cubic feet per second. Despite being privately owned, the dam plays a crucial role in water resource management and climate resilience efforts in the region.

With its close proximity to the Brazos River, Dacus Lake Dam serves as a key asset for flood control and water supply, while also offering recreational opportunities for the local community. As a significant component of the water infrastructure in Brazoria, Texas, this dam showcases the importance of sustainable water resource management and climate adaptation strategies. Its history, design, and operational features make it a fascinating subject for water resource and climate enthusiasts interested in understanding the intersection of infrastructure, environmental stewardship, and community resilience.

Year Completed

1956

Dam Length

5742

Dam Height

9

River Or Stream

OFF CH-BRAZOS RIVER

Primary Dam Type

Earth

Surface Area

49

Hydraulic Height

9

Drainage Area

0.07

Nid Storage

439

Structural Height

9

Outlet Gates

Uncontrolled - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

9
       
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.