Flagg Reservoir Report
Nearby: Saddleback Lake City Pond
Last Updated: December 19, 2025
Flagg is a private water resource structure located in Franklin, Maine, along the South Branch Dead River.
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Summary
Built in 1922, this dam stands at a height of 13 feet and has a length of 65 feet, with a storage capacity of 300 acre-feet. While it serves a primary purpose of "Other," its purposes and dam types are not specified in the data. Flagg is state-regulated by MEMA, with permitting, inspection, and enforcement processes in place to ensure its safety and compliance.
Despite being categorized as having a low hazard potential and not yet assessed for condition, Flagg remains an essential component of the local water infrastructure. With its location in a scenic area of Maine, it is crucial for water resource and climate enthusiasts to monitor and understand the significance of structures like Flagg in maintaining water security and environmental balance. While lacking detailed information on specific features like spillways and outlet gates, the data highlights the importance of continuous monitoring and maintenance to ensure the safety and functionality of Flagg and similar structures.
As a private dam with historical significance, Flagg represents a piece of Maine's water resource infrastructure that requires ongoing attention and management. Its association with the South Branch Dead River adds to its ecological and recreational value, making it a focal point for those interested in water conservation and climate resilience. By taking an active interest in the regulation and maintenance of structures like Flagg, enthusiasts can contribute to the sustainability and preservation of water resources in the region.
Year Completed |
1922 |
Dam Length |
65 |
Dam Height |
13 |
River Or Stream |
South Branch Dead River |
Surface Area |
50 |
Nid Storage |
300 |
Structural Height |
13 |
Hazard Potential |
Low |
Nid Height |
13 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dead River Near Dead River
|
786cfs |
Swift River Near Roxbury
|
89cfs |
Diamond River Near Wentworth Location
|
126cfs |
Spencer Stream At Mouth
|
104cfs |
Ellis River At South Andover
|
74cfs |
Carrabassett River Near North Anson
|
304cfs |
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.
Flagg