Anasagunticook Reservoir Report
Nearby: Martin Stream Riley
Last Updated: December 22, 2025
Anasagunticook, also known as Anasagunticook Lake, is a significant water resource located in Oxford, Maine.
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Summary
This local government-owned dam serves multiple purposes, including water supply, fish and wildlife pond, recreation, and more. Completed in 1900, the concrete dam stands at a height of 11 feet and has a storage capacity of 5,800 acre-feet, with a normal storage level of 4,924 acre-feet.
With a surface area of 582 acres and a drainage area of 15 square miles, Anasagunticook plays a vital role in the region's water supply and ecosystem. The dam's condition is assessed as satisfactory, with a significant hazard potential. Regular inspections are conducted to ensure its safety, with the last assessment taking place in June 2015. Despite its age, Anasagunticook continues to provide essential services and recreational opportunities for the community.
Managed by the Maine Emergency Management Agency (MEMA), Anasagunticook is subject to state regulation, permitting, inspection, and enforcement. The dam's emergency action plan is regularly reviewed and updated to meet guidelines, ensuring preparedness in the event of a crisis. As a key water source and recreational area in the region, Anasagunticook remains a valuable asset that requires ongoing maintenance and oversight to safeguard its integrity and functionality for future generations.
Year Completed |
1900 |
Dam Length |
175 |
Dam Height |
11 |
River Or Stream |
Whitney Brook |
Primary Dam Type |
Concrete |
Surface Area |
582 |
Hydraulic Height |
7 |
Drainage Area |
15 |
Nid Storage |
5800 |
Structural Height |
11 |
Hazard Potential |
Significant |
Nid Height |
11 |
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.
Anasagunticook