Mill Pond #1 Dam Reservoir Report
Last Updated: December 13, 2025
Mill Pond #1 Dam, located in Fitchburg, Massachusetts, was completed in 1876 and serves as a critical water supply structure for the area.
°F
°F
mph
Wind
%
Humidity
Summary
This masonry dam stands at a height of 14 feet and has a storage capacity of 58 acre-feet, with a normal storage level of 15.75 acre-feet. The dam is situated on the North Nashua River and is regulated by the Department of Conservation and Recreation.
The dam, with a spillway type of "Uncontrolled," has a hazard potential rated as "Significant" and a condition assessment of "Satisfactory." Although it has a moderate risk level, the dam has not been modified in recent years and is inspected every 5 years to ensure its safety and functionality. The surrounding area has a drainage area of 64 square miles, highlighting the importance of the dam in managing water resources in the region.
Overall, Mill Pond #1 Dam plays a crucial role in providing water supply for the community while also managing the flow of the North Nashua River. Its historical significance, combined with its current condition and risk assessment, underscores the importance of ongoing monitoring and maintenance to ensure the safety and stability of this key infrastructure for water resource and climate enthusiasts.
Year Completed |
1876 |
Dam Length |
121 |
Dam Height |
14 |
River Or Stream |
NORTH NASHUA RIVER |
Primary Dam Type |
Masonry |
Surface Area |
3.15 |
Hydraulic Height |
14 |
Drainage Area |
64 |
Nid Storage |
58 |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
Nid Height |
14 |
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.
Mill Pond #1 Dam