Wilton Pond Dam Reservoir Report

Last Updated: December 5, 2025

Wilton Pond Dam, located in Waterville, Connecticut, is a historic masonry dam completed in 1810 for recreational purposes.


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Summary

Situated on Nibbling Brook, this dam stands at a height of 15 feet with a length of 42 feet, providing a storage capacity of 63 acre-feet. The dam's significant hazard potential is managed through regular inspections, with the last assessment conducted in December 2014, revealing a satisfactory condition.

With a normal storage capacity of 42 acre-feet and a maximum discharge of 356 cubic feet per second, Wilton Pond Dam plays a crucial role in managing water resources in the area. The dam's location in Litchfield County, under the jurisdiction of the Connecticut Department of Energy and Environmental Protection (DEEP), highlights its importance in flood control and water supply management. Despite its age, the dam continues to serve its recreational purpose while being subject to state regulations for inspection and enforcement.

Water resource and climate enthusiasts are drawn to Wilton Pond Dam not only for its historical significance but also for its contribution to the local ecosystem and water management practices. As part of the New England District, this dam underscores the importance of balancing recreational activities with environmental stewardship and safety measures. With its picturesque surroundings and vital role in water resource management, Wilton Pond Dam stands as a testament to the intersection of history, recreation, and environmental sustainability.

Year Completed

1810

Dam Length

42

Dam Height

15

River Or Stream

NIBBLING BROOK

Primary Dam Type

Masonry

Surface Area

8.4

Drainage Area

1.35

Nid Storage

63

Hazard Potential

Significant

Nid Height

15
       
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.