Boott Gate Reservoir Report

Last Updated: December 17, 2025

Boott Gate is a historic masonry dam located in Lowell, Massachusetts, along the Eastern Canal.


°F

°F

mph

Wind

%

Humidity

Summary

Completed in 1835, this structure serves a primary purpose of hydroelectric power generation, with a storage capacity of 4,500 acre-feet and a maximum discharge of 1,307 cubic feet per second. Standing at a height of 10 feet with a hydraulic height of 15 feet, Boott Gate also provides flood risk reduction, fire protection, and recreational opportunities in the area.

Managed by a private owner, Boott Gate is regulated by the Federal Energy Regulatory Commission (FERC) and inspected regularly to ensure its safe operation. With a low hazard potential and a very high risk assessment rating, this dam plays a crucial role in water resource management and climate control in the region. Featuring a controlled spillway and a slide gate, it is part of a network of 15 associated structures that contribute to the overall infrastructure of the area.

As a key component of the water management system in Middlesex County, Boott Gate represents a blend of historic significance and modern functionality. Its presence along the Eastern Canal not only supports hydroelectric power generation but also provides essential services such as flood control and navigation. With its unique design and long-standing history, Boott Gate remains a vital asset for water resource and climate enthusiasts seeking to understand the intersection of technology, history, and environmental stewardship.

Year Completed

1835

Dam Length

40

Dam Height

10

River Or Stream

Eastern Canal

Primary Dam Type

Masonry

Surface Area

720

Hydraulic Height

15

Nid Storage

4500

Structural Height

8

Outlet Gates

Slide (sluice gate) - 1

Hazard Potential

Low

Foundations

Unlisted/Unknown

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.