Windsor Minerals Pond #10 Reservoir Report

Last Updated: December 16, 2025

Windsor Minerals Pond #10, also known as Cwm Tailings Pond #10, is a private tailings pond located in West Windsor, Vermont.


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Summary

Constructed in 1982 by SOILS ENGINEERING, this earth dam stands at a height of 33 feet with a length of 1550 feet, providing storage for 65 acre-feet of water. The pond serves primarily for tailings purposes and is regulated by the Vermont Department of Environmental Conservation.

With a surface area of 8 acres and a drainage area of 0.04 square miles, Windsor Minerals Pond #10 has a low hazard potential and is currently in satisfactory condition. The dam has a spillway width of 0 feet and is inspected every 10 years, with the last assessment conducted in September 2013. The pond is situated along Mill Brook-TR and is monitored for state permitting, inspection, and enforcement to ensure its safety and compliance with regulations.

For water resource and climate enthusiasts, Windsor Minerals Pond #10 offers a fascinating glimpse into the engineering and management of a tailings pond in Vermont. With its stone core and soil foundation, this dam serves an important purpose in storing water for industrial processes while maintaining environmental standards. As efforts continue to monitor and assess its condition, this pond stands as a testament to responsible water resource management in the region.

Year Completed

1982

Dam Length

1550

Dam Height

33

River Or Stream

MILL BROOK-TR

Primary Dam Type

Earth

Surface Area

8

Hydraulic Height

33

Drainage Area

0.04

Nid Storage

65

Structural Height

33

Hazard Potential

Low

Foundations

Soil

Nid Height

33
       
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.