Green Reservoir No 1 Dam Reservoir Report

Last Updated: December 5, 2025

Green Reservoir No 1 Dam, located in Shackelford County, Texas, was completed in 1960 for the primary purpose of irrigation.


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Summary

The dam, standing at a height of 24 feet and stretching 525 feet in length, holds a maximum storage capacity of 163 acre-feet. Situated on McDowell Creek, this earth dam with a buttress core type plays a crucial role in providing water for agricultural needs in the region.

Although the dam does not have a spillway, it is equipped with one outlet gate for water release. With a surface area of 10 acres and a normal storage capacity of 68 acre-feet, the dam serves as a vital resource for fire protection, stock watering, and small fish pond maintenance in addition to irrigation purposes. While the risk assessment for the dam categorizes it as high risk, measures for risk management and emergency preparedness are not currently available, highlighting the need for continued monitoring and maintenance to ensure its integrity and safety.

As a privately owned structure, Green Reservoir No 1 Dam falls under state regulation for permitting and inspection, but not enforcement. The dam, managed by its private owner, contributes significantly to the local water resource management and climate resilience efforts. With its strategic location and purposeful design, this dam stands as a testament to the importance of sustainable water infrastructure in supporting agricultural activities and environmental conservation in the region.

Year Completed

1960

Dam Length

525

Dam Height

24

River Or Stream

MCDOWELL CREEK

Primary Dam Type

Earth

Surface Area

10

Hydraulic Height

24

Nid Storage

163

Structural Height

24

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

24
       
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.