Little Madaswaska Reservoir Report
Nearby: Malabeam Lake Durepo Brook
Last Updated: December 20, 2025
Little Madaswaska is a concrete dam located on the Little Madaswaska River in Aroostook, Maine.
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Summary
Completed in 1960, this dam serves as a crucial water supply source with a storage capacity of 350 acre-feet. The dam stands at a height of 33 feet, with a spillway width of 190 feet, ensuring the efficient management of water resources in the region. Despite its low hazard potential, the dam is regulated by the Maine Emergency Management Agency (MEMA) and undergoes regular inspections to ensure its structural integrity.
With its primary purpose being water supply, Little Madaswaska plays a vital role in meeting the water needs of the local community. The dam's normal storage capacity of 125 acre-feet provides a reliable source of water for various uses. Its location in the New England District underscores its importance in the region's water resource management. The dam's condition assessment is currently not rated, highlighting the need for ongoing monitoring and maintenance to ensure its continued functionality in the face of changing climate conditions.
As a key infrastructure for water management in Maine, Little Madaswaska represents a significant resource for climate and water enthusiasts. The dam's strategic location and design underscore its importance in safeguarding water supply in the region. With regular inspections and state regulation in place, Little Madaswaska serves as a beacon of resilience in the face of climate-related challenges. Its low hazard potential and ample storage capacity make it a crucial asset for sustaining water resources in Aroostook County and beyond.
Year Completed |
1960 |
Dam Length |
320 |
Dam Height |
33 |
River Or Stream |
Little Madaswaska River |
Primary Dam Type |
Concrete |
Surface Area |
50 |
Hydraulic Height |
10 |
Nid Storage |
350 |
Structural Height |
33 |
Hazard Potential |
Low |
Nid Height |
33 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Aroostook River At Washburn
|
1520cfs |
Williams Brook At Phair
|
3cfs |
Fish River Near Fort Kent
|
695cfs |
Aroostook River Near Masardis
|
825cfs |
St. John River Below Fish R
|
2780cfs |
Allagash River Near Allagash
|
566cfs |
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.
Little Madaswaska