Winn Gss Reservoir Report

Last Updated: December 5, 2025

Winn Gss, located in Montague, Texas, is a privately owned earth dam designed by the USDA NRCS and completed in 1970.


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Summary

This dam, situated on TR-GRAPEVINE CREEK, stands at a height of 30 feet and has a storage capacity of 34 acre-feet. While the primary purpose of Winn Gss is classified as "Other", it serves important functions within the local water resource management system.

Despite being a privately owned structure, Winn Gss is subject to state permitting and inspection requirements. It is notable that this dam has a high hazard potential rating, indicating the need for careful monitoring and risk management measures. The dam lacks a spillway and is not equipped with locks, highlighting its unique design and construction features.

For water resource and climate enthusiasts, Winn Gss presents an intriguing case study of a privately owned earth dam in Texas. Its location, design characteristics, and risk profile make it a valuable point of interest for those interested in the intersection of water management, infrastructure development, and environmental conservation.

Year Completed

1970

Dam Length

408

Dam Height

30

River Or Stream

TR-GRAPEVINE CREEK

Primary Dam Type

Earth

Hydraulic Height

30

Nid Storage

34

Structural Height

30

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

30
       
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.