Sedimentation Pond No 9 Reservoir Report

Last Updated: December 5, 2025

Sedimentation Pond No 9, located in Jewett, Texas, is a privately owned water resource structure primarily designed for tailings management.


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Summary

The pond is regulated by the Texas Commission on Environmental Quality (TCEQ) and is subject to regular inspection, permitting, and enforcement. With a storage capacity of 986 acre-feet and a surface area of 10 acres, the pond plays a crucial role in managing mine runoff and sedimentation from Mine Creek.

Constructed as an earth dam with a height of 23 feet, Sedimentation Pond No 9 serves as a vital component in the environmental management of the area. While the hazard potential is not available and the condition assessment is not rated, the risk assessment categorizes the structure as high risk (2). Despite the lack of recent modification and assessment data, the pond's importance in mitigating environmental impact and ensuring water resource sustainability cannot be understated.

Overall, Sedimentation Pond No 9 stands as a key infrastructure for water resource and climate enthusiasts to monitor and support in the ongoing effort to safeguard water quality and manage sedimentation in the region. With its location in Leon County, Texas, and close proximity to Mine Creek, the pond's role in environmental protection and management is essential for maintaining a healthy ecosystem and preserving the integrity of water resources in the area.

Dam Height

23

River Or Stream

MINE CREEK

Primary Dam Type

Earth

Surface Area

10

Hydraulic Height

23

Drainage Area

3.2

Nid Storage

986

Structural Height

23

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

23
       
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.