Weybridge West Reservoir Report

Last Updated: December 13, 2025

Weybridge West, located in Addison County, Vermont, is a gravity dam constructed in 1951 primarily for hydroelectric purposes on the Otter Creek.


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Summary

With a height of 30 feet and a length of 156 feet, this dam has a storage capacity of 600 acre-feet and a maximum discharge rate of 46,000 cubic feet per second. The spillway, controlled and 104 feet wide, ensures the safe release of excess water during periods of high flow.

Owned and operated by a public utility, Weybridge West falls under the jurisdiction of the Federal Energy Regulatory Commission (FERC) and is subject to their regulations and inspections. Despite a low hazard potential, the dam is categorized as having a very high risk due to its critical role in water resource management and the potential impact of a failure. While the condition assessment is not available, regular inspections are conducted every three years to ensure the structural integrity and safety of the dam.

In the event of an emergency, Weybridge West does not have an Emergency Action Plan (EAP) in place, but it has been deemed to meet guidelines and have inundation maps prepared. With its strategic location on the Otter Creek and significant storage capacity, Weybridge West plays a crucial role in water management and hydroelectric power generation in the region, making it a key asset for climate and water resource enthusiasts to monitor and study.

Year Completed

1951

Dam Length

156

Dam Height

30

River Or Stream

Otter Creek

Primary Dam Type

Gravity

Surface Area

62

Drainage Area

750

Nid Storage

600

Outlet Gates

Slide (sluice gate) - 1, Tainter (radial) - 1

Hazard Potential

Low

Nid Height

30
       
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.