Wedge Pond Dam Reservoir Report
Nearby: Scalley Dam Middle Reservoir Dike
Last Updated: December 19, 2025
Wedge Pond Dam, located in Winchester, Massachusetts, is a local government-owned structure that serves as a recreational area for water resource and climate enthusiasts.
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Summary
This earth dam, completed in 1900, stands at a height of 9 feet and has a hydraulic height of 8 feet. With a storage capacity of 260 acre-feet and a normal storage of 35 acre-feet, the dam also boasts a surface area of 0.04 square miles and sits on a tributary of the Aberjona River.
Managed by the Department of Conservation and Recreation in Massachusetts, Wedge Pond Dam has a low hazard potential and is currently in fair condition, according to a 2010 assessment. The dam features an uncontrolled spillway type and has not been modified in recent years. Despite its moderate risk level, the dam is regularly inspected, with the last inspection taking place in 2010. With its picturesque location and recreational purpose, Wedge Pond Dam is a vital part of the water infrastructure in Middlesex County, providing both leisure activities and essential water resource management for the community.
Year Completed |
1900 |
Dam Length |
30 |
Dam Height |
9 |
River Or Stream |
TRIBUTARY OF ABERJONA RIVER |
Primary Dam Type |
Earth |
Surface Area |
0.04 |
Hydraulic Height |
8 |
Drainage Area |
10.8 |
Nid Storage |
260 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
9 |
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.
Wedge Pond Dam
Pond Lane Arlington