Fall Brook Reservoir Dam And Dike Reservoir Report
Last Updated: December 12, 2025
The Fall Brook Reservoir Dam and Dike, located in Leominster, Massachusetts, was completed in 1896 and serves as a critical water supply infrastructure for the region.
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Summary
The dam stands at a height of 37 feet and has a hydraulic height of 32 feet, with a storage capacity of 1,750 acre-feet. The primary purpose of the dam is for water supply, with a normal storage capacity of 1,290 acre-feet and a surface area of 85 acres.
The dam is regulated by the Department of Conservation and Recreation in Massachusetts, with state permitting, inspection, and enforcement in place to ensure its safety and compliance with regulations. The hazard potential of the dam is classified as high, with a fair condition assessment as of the last inspection in December 2016. Despite the moderate risk level, the dam has not been modified in recent years and has a spillway type classified as uncontrolled.
Overall, the Fall Brook Reservoir Dam and Dike play a crucial role in water resource management in Worcester County, Massachusetts. With its historical significance and ongoing maintenance and regulation, it serves as a vital piece of infrastructure for ensuring water supply reliability in the region while managing potential risks associated with its operation.
Year Completed |
1896 |
Dam Length |
1400 |
Dam Height |
37 |
River Or Stream |
FALL BROOK |
Primary Dam Type |
Earth |
Surface Area |
85 |
Hydraulic Height |
32 |
Drainage Area |
1.3 |
Nid Storage |
1750 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
37 |
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.
Fall Brook Reservoir Dam And Dike