Medway Park Dam Reservoir Report

Last Updated: February 3, 2026

Medway Park Dam, located in Medway, Massachusetts, is a significant structure regulated by the Department of Conservation and Recreation.


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Summary

Completed in 2008, this earth dam serves primarily for recreational purposes, offering a surface area of 5.3 acres and a maximum storage capacity of 100 acre-feet. With a dam height of 12 feet and a hydraulic height of 9 feet, the dam provides both water storage and flood control benefits for the surrounding area along Chicken Brook.

Despite its satisfactory condition assessment in 2013, with a significant hazard potential, the dam is subject to regular inspections every 5 years to ensure its safety and functionality. The dam's spillway type is uncontrolled, with a spillway width of 0 feet. This structure plays a crucial role in managing water resources in the region, offering a recreational space while also contributing to flood risk management. As a key element of the local water infrastructure, Medway Park Dam remains a focal point for water resource and climate enthusiasts interested in the sustainable management of dams and reservoirs.

Year Completed

2008

Dam Length

120

Dam Height

12

River Or Stream

CHICKEN BROOK

Primary Dam Type

Earth

Surface Area

5.3

Hydraulic Height

9

Drainage Area

6.7

Nid Storage

100

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

12
       
Seasonal Comparison

Hourly 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.