Morrisville Reservoir Report

Last Updated: December 12, 2025

Morrisville, a hydroelectric dam located in Hyde Park, Vermont, harnesses the power of the Lamoille River to generate clean energy.


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Summary

Completed in 1924, this Gravity-type dam stands at 29 feet high and stretches 250 feet in length, with a storage capacity of 150 acre-feet. With a low hazard potential, Morrisville has a controlled spillway and a maximum discharge of 140,000 cubic feet per second, ensuring safety and efficiency in its operations.

Managed by the Federal Energy Regulatory Commission, Morrisville plays a crucial role in the region's energy infrastructure. Its strategic location within the New England District enables it to efficiently serve the community while minimizing environmental impact. Despite its age, Morrisville continues to operate effectively, meeting the high-risk assessment standards set by regulatory agencies.

Water resource and climate enthusiasts will appreciate Morrisville's contribution to sustainable energy production and its adherence to safety and regulatory guidelines. As a key player in Vermont's hydroelectric landscape, Morrisville exemplifies the balance between harnessing natural resources for power generation and protecting the environment for future generations. Its continued operation underscores the importance of maintaining and modernizing existing infrastructure to meet growing energy demands in a responsible manner.

Year Completed

1924

Dam Length

250

Dam Height

29

River Or Stream

Lamoille River

Primary Dam Type

Gravity

Surface Area

15

Drainage Area

222

Nid Storage

150

Outlet Gates

Other Controlled - 2

Hazard Potential

Low

Foundations

Rock

Nid Height

29
       
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.