Hewett Marsh Reservoir Report
Last Updated: December 23, 2025
Hewett Marsh, located in Somerset, Maine, is a private fish and wildlife pond that has been serving as a habitat for various species since its completion in 1955.
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Summary
The dam, primarily constructed for recreational and conservation purposes, stands at a height of 8 feet and spans a length of 130 feet, with a storage capacity of 95 acre-feet. The marsh is situated along the Wesserunsett Stream and covers a surface area of 12 acres, providing a serene environment for wildlife and outdoor enthusiasts alike.
Managed by the Maine Emergency Management Agency (MEMA), Hewett Marsh is state-regulated and regularly inspected to ensure its structural integrity and safety. With a low hazard potential, the dam has not been rated for its condition assessment, but its emergency action plan and risk management measures are continuously monitored and updated. The marsh's proximity to the New England District highlights its importance as a water resource in the region, emphasizing the need for sustainable management practices to safeguard its ecological value and recreational opportunities.
Despite its modest size and storage capacity, Hewett Marsh plays a vital role in supporting local biodiversity and recreational activities in the area. With its peaceful surroundings and conservation efforts, the marsh serves as a valuable asset for wildlife preservation and water resource management, making it a significant destination for water resource and climate enthusiasts seeking to appreciate the intersection of ecology and human interaction with natural landscapes.
Year Completed |
1955 |
Dam Length |
130 |
Dam Height |
8 |
River Or Stream |
Wesserunsett Stream |
Primary Dam Type |
Earth |
Surface Area |
12 |
Hydraulic Height |
6 |
Drainage Area |
1 |
Nid Storage |
95 |
Structural Height |
8 |
Hazard Potential |
Low |
Nid Height |
8 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Carrabassett River Near North Anson
|
304cfs |
Sandy River Near Mercer
|
326cfs |
Kennebec River At Bingham
|
2760cfs |
Austin Stream At Bingham
|
55cfs |
Kennebec River At North Sidney
|
6240cfs |
Kingsbury Stream At Abbot Village
|
60cfs |
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.
Hewett Marsh