Westford Depot Dam Reservoir Report
Nearby: Brookside Mill Dam Stony Brook Dam
Last Updated: December 17, 2025
Westford Depot Dam, located in Westford, Massachusetts, is a masonry dam with a primary purpose of "Other." The dam, situated on the Stony Brook river, has a height of 12 feet and a hydraulic height of 7 feet.
°F
°F
mph
Wind
%
Humidity
Summary
It has a storage capacity of 490 acre-feet, with a normal storage level of 280 acre-feet. The dam is regulated by the Department of Conservation and Recreation in Massachusetts and is inspected regularly to ensure its safety and compliance with state regulations.
The Westford Depot Dam has a significant hazard potential and is considered to be in fair condition as of the last assessment in July 2015. The dam has a moderate risk level, with a risk assessment rating of 3. While the dam does not have an Emergency Action Plan (EAP) prepared, it undergoes regular inspections every 5 years to monitor its condition and ensure the safety of the surrounding area. With its historical significance and importance for water resource management in the region, the Westford Depot Dam serves as a key structure in the local government's efforts to protect and regulate water resources.
Despite its age and design, the Westford Depot Dam continues to play a crucial role in managing water flow and storage in the region. As a gravity dam with a buttress core type, it reflects the engineering practices of its time and stands as a testament to the importance of maintaining and monitoring infrastructure for water resource management. With its location in Middlesex County, Massachusetts, the dam remains a focal point for climate and water resource enthusiasts interested in the intersection of historical infrastructure and modern regulatory practices.
Dam Length |
65 |
Dam Height |
12 |
River Or Stream |
STONY BROOK |
Primary Dam Type |
Masonry |
Hydraulic Height |
7 |
Drainage Area |
34.5 |
Nid Storage |
490 |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
Nid Height |
12 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Westford Depot Dam
Great Road 687, Littleton