D-6 Sediment Pond Reservoir Report

Last Updated: December 18, 2025

D-6 Sediment Pond, located in Marquez, Texas, is a privately owned structure with a primary purpose categorized as 'Other'.


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Summary

Built in 2007, this Earth-type dam stands at a height of 22 feet and has a length of 4100 feet, providing a storage capacity of 2524 acre-feet. The pond covers a surface area of 91.8 acres and serves a drainage area of 8.8 square miles, with a maximum discharge capacity of 3535 cubic feet per second.

Managed by the Mine Safety and Health Administration, D-6 Sediment Pond features an uncontrolled spillway with a width of 30 feet and an outlet gate for regulation. Despite being designated as 'Not Rated' in terms of condition assessment, the risk potential is considered moderate (3). While there are no specific emergency action plans or inundation maps prepared for this structure, the overall risk management measures remain unspecified. With its strategic location and critical function in sediment control, D-6 Sediment Pond stands as a vital resource in water conservation and climate resilience efforts in the region.

Year Completed

2007

Dam Length

4100

Dam Height

22

River Or Stream

Primary Dam Type

Earth

Surface Area

91.8

Hydraulic Height

22

Drainage Area

8.8

Nid Storage

2524

Structural Height

22

Outlet Gates

Uncontrolled - 1

Hazard Potential

Not Available

Foundations

Soil

Nid Height

22
       
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.