Maple Street Dam Reservoir Report

Last Updated: December 19, 2025

Maple Street Dam, located in Mansfield, Massachusetts, is a vital structure regulating the flow of the Canoe River.


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Summary

Built in 1900, this earth dam stands at a height of 21 feet and serves primarily for recreational purposes, offering a storage capacity of 160 acre-feet. The dam is owned and regulated by the Department of Conservation and Recreation in Massachusetts, ensuring its compliance with state inspection and enforcement protocols.

With a low hazard potential and fair condition assessment, Maple Street Dam poses a moderate risk according to a recent assessment. Despite its age, the dam continues to provide essential flood control and water resource management for the surrounding area. The dam's uncontrolled spillway and moderate risk designation highlight the importance of regular inspections and maintenance to ensure its continued functionality and safety for the community.

Maple Street Dam's presence underscores the intersection of water resource management and recreational opportunities, serving as a reminder of the delicate balance between human development and environmental conservation. As climate change continues to impact water resources, structures like Maple Street Dam play a crucial role in mitigating flooding and preserving the surrounding ecosystem. Through ongoing risk assessments and management measures, this historic dam remains a key player in safeguarding the Canoe River and the community it serves.

Year Completed

1900

Dam Length

30

Dam Height

21

River Or Stream

CANOE RIVER

Primary Dam Type

Earth

Surface Area

2

Hydraulic Height

8.5

Drainage Area

4.24

Nid Storage

160

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

21
       
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.