Sedimentation Pond H 1 Dam Reservoir Report

Last Updated: December 5, 2025

Sedimentation Pond H 1 Dam, located in Mount Pleasant, Texas, was completed in 1989 and serves as a crucial structure for tailings management.


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Summary

Designed by Nationwide Water Resources Services, Inc., this private earth dam stands at a height of 8 feet with a length of 1950 feet, providing a storage capacity of 490 acre-feet. Despite its primary purpose for tailings, the dam has a normal storage capacity of 97 acre-feet and covers a surface area of 10 acres within the drainage area of 1.52 square miles along TR-BLUNDELL CREEK.

This dam, under the jurisdiction of the Fort Worth District of the US Army Corps of Engineers, currently has a high risk assessment rating of 2, indicating potential hazards that warrant attention. Although the hazard potential and condition assessment are not available, the dam's maintenance and inspection records date back to 1990, with no recent updates. With no spillway and limited outlet gates, the dam's risk management measures and emergency preparedness status remain unclear, raising concerns for potential risks in the event of heavy precipitation or flooding in the region.

Water resource and climate enthusiasts monitoring Sedimentation Pond H 1 Dam should take note of its critical role in tailings management, despite lacking a spillway and limited outlet gates. The dam's high risk assessment rating underscores the importance of regular inspections and maintenance to ensure its structural integrity and prevent potential risks to downstream areas. As the dam operates under private ownership with state permitting and inspection requirements, stakeholders should advocate for updated risk management measures and emergency preparedness protocols to mitigate any potential hazards associated with this essential water resource structure.

Year Completed

1989

Dam Length

1950

Dam Height

8

River Or Stream

TR-BLUNDELL CREEK

Primary Dam Type

Earth

Surface Area

10

Hydraulic Height

8

Drainage Area

1.52

Nid Storage

490

Structural Height

8

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

8
       
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.