Griffin Lake Dam Reservoir Report

Last Updated: December 5, 2025

Griffin Lake Dam, located in Rusk, Texas, stands as a vital structure for irrigation purposes since its completion in 1962.


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Summary

This privately owned Earth dam, with a height of 16 feet, holds a storage capacity of 120 acre-feet, serving as a crucial water source for the surrounding area. The dam, situated on Double Spring Branch, plays a significant role in supporting agricultural activities in the region.

Despite its importance, Griffin Lake Dam has not been rated for its condition assessment and has a high risk level assigned. With no spillway and limited information on its hazard potential, the dam poses certain challenges in terms of risk management and emergency preparedness. The last inspection conducted in 1984 highlights the need for updated assessments and measures to ensure the safety and efficiency of the structure.

Water resource and climate enthusiasts can appreciate the significance of Griffin Lake Dam in sustaining irrigation activities in the area. As a key component of the local water infrastructure, the dam's operational status, risk level, and maintenance needs underscore the importance of ongoing monitoring and management to ensure its continued functionality and safety in the face of changing environmental conditions and potential hazards.

Year Completed

1962

Dam Height

16

River Or Stream

DOUBLE SPRING BRANCH

Primary Dam Type

Earth

Surface Area

15

Hydraulic Height

16

Nid Storage

120

Structural Height

16

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

16
       
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.