Massachusetts Bog Reservoir Report
Nearby: Little Island Pond Beaver Pond
Last Updated: December 26, 2025
Massachusetts Bog, located in Franklin, Maine, is a private Fish and Wildlife Pond dating back to 1970.
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Summary
With a dam height of 16 feet and a storage capacity of 264 acre-feet, this timber crib dam serves multiple purposes including fish and wildlife habitat, recreation, and more. The dam, with a hydraulic height of 12 feet, plays a crucial role in maintaining the normal storage of 253 acre-feet across its 30-acre surface area.
Managed by the state regulatory agency MEMA, Massachusetts Bog is inspected regularly with a fair condition assessment reported in August 2016. Despite its low hazard potential, the dam is subject to state jurisdiction, permitting, and enforcement to ensure its continued safety and functionality. With its scenic location along the Massachusetts Bog Stream, this dam provides important ecological benefits while also offering recreational opportunities for enthusiasts and climate advocates alike.
For water resource and climate enthusiasts, Massachusetts Bog represents a valuable ecosystem and recreational area that highlights the importance of proper dam management and maintenance. As a state-regulated facility, this timber crib dam serves as a vital habitat for fish and wildlife, while also offering opportunities for outdoor activities. With ongoing inspections and a focus on safety and sustainability, Massachusetts Bog stands as a testament to the intersection of nature, water resources, and responsible environmental stewardship.
Dam Height |
16 |
Hydraulic Height |
12 |
Year Completed |
1970 |
Structural Height |
16 |
Nid Storage |
264 |
Surface Area |
30 |
River Or Stream |
Massachusetts Bog Stream |
Dam Length |
50 |
Hazard Potential |
Low |
Primary Dam Type |
Timber Crib |
Nid Height |
16 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Spencer Stream At Mouth
|
104cfs |
Dead River Near Dead River
|
791cfs |
Diamond River Near Wentworth Location
|
160cfs |
Connecticut R Below Indian Stream Nr Pittsburg
|
248cfs |
Kennebec River At The Forks
|
942cfs |
Androscoggin River At Errol
|
1220cfs |
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.
Massachusetts Bog