Ea Patterson Gss Reservoir Report

Last Updated: December 5, 2025

Ea Patterson Gss, also known as Patterson Dam, is a privately owned structure located in Parker, Texas.


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Summary

Built in 1976 by the USDA NRCS, this earth dam stands at 26 feet tall and stretches 249 feet in length. Its primary purpose is for fire protection, stock, or as a small fish pond, with a storage capacity of 45 acre-feet.

Despite being designated as high risk with a hazard potential that is not available, the dam does not have a spillway and has not been rated for condition assessment. It is not regulated by the state but does require permitting and inspection. The dam's location on TR-WILLOW CREEK in the Fort Worth District makes it a key feature for water resource enthusiasts to monitor for potential impacts on the surrounding area.

For climate and water resource enthusiasts, Ea Patterson Gss presents an intriguing case study of a privately owned dam with limited regulatory oversight and high risk potential. Its unique design and purpose raise questions about the management and maintenance of such structures in the face of changing environmental conditions. Monitoring this dam's condition and potential impact on the local ecosystem could provide valuable insights into the intersection of water resources and climate adaptation strategies in Texas.

Year Completed

1976

Dam Length

249

Dam Height

26

River Or Stream

TR-WILLOW CREEK

Primary Dam Type

Earth

Hydraulic Height

26

Nid Storage

45

Structural Height

26

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

26
       
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.