Easam Mill Seat Lake Dam Reservoir Report

Last Updated: December 6, 2025

Easam Mill Seat Lake Dam, located in Walker County, Texas, was completed in 1960 and serves as a vital water supply structure in the region.


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Summary

The dam, classified as an Earth type structure with a height of 25 feet and a length of 845 feet, primarily stores water from White Oak Creek for various purposes, including water supply. With a normal storage capacity of 88 acre-feet and a maximum storage capacity of 130 acre-feet, the dam plays a significant role in ensuring water availability for the surrounding area.

The dam, owned by a private entity, stands as a testament to engineering excellence with its Buttress core type and unlisted/unknown foundation. Despite its high hazard potential and a risk assessment rating of 2 (considered high), the dam has not been rated for its current condition. Furthermore, the dam does not have a spillway, and its emergency action plan and inundation maps are not available. Although the dam is not under federal regulation, it undergoes state inspection and permitting to ensure its structural integrity and safe operation. Overall, Easam Mill Seat Lake Dam remains a critical infrastructure for water resource management in the region.

As water resource and climate enthusiasts, the Easam Mill Seat Lake Dam offers a fascinating case study in dam engineering and management. With its strategic location on White Oak Creek and its essential role in water supply, the dam highlights the importance of sustainable water resource development and infrastructure maintenance. While facing potential risks and lacking certain safety measures, the dam serves as a reminder of the ongoing challenges in managing water resources and ensuring the safety of critical structures in the face of changing climate conditions.

Year Completed

1960

Dam Length

845

Dam Height

25

River Or Stream

WHITE OAK CREEK

Primary Dam Type

Earth

Surface Area

10

Hydraulic Height

25

Nid Storage

130

Structural Height

25

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

25
       
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.