Lake Shadowood Dam Reservoir Report

Last Updated: December 5, 2025

Lake Shadowood Dam, located in Harrison County, Texas, is a privately owned earth dam with a primary purpose of recreation.


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Summary

Built in 1970 by designer John W Allen, this dam stands at a height of 26 feet and spans a length of 830 feet. It has a storage capacity of 2111 acre-feet, with a normal storage level of 1325 acre-feet.

Managed by the Texas Commission on Environmental Quality (TCEQ), Lake Shadowood Dam is regulated, permitted, inspected, and enforced by the state. Despite being rated as having a high risk potential, the condition of the dam is currently not assessed. The dam does not have a spillway and is associated with the TR-Deboldin Creek.

While the dam has not been modified in recent years and lacks hazard potential information, its role in providing recreational opportunities and storing water for the local area makes it a significant structure for water resource and climate enthusiasts to study and appreciate.

Year Completed

1970

Dam Length

830

Dam Height

26

River Or Stream

TR-DEBOLDIN CREEK

Primary Dam Type

Earth

Hydraulic Height

26

Nid Storage

2111

Structural Height

26

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

26
       
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.