Pattee Mill Reservoir Report

Last Updated: December 19, 2025

Located in Aroostook, Maine, the Pattee Mill dam on Pattee Brook was completed in 1979 for the primary purpose of recreation.


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Summary

The dam, with a height of 15 feet and a hydraulic height of 5 feet, spans 110 feet in length and has a storage capacity of 100 acre-feet. With a surface area of 8 acres and draining an area of 22 square miles, the dam serves as a vital resource for water management and recreational activities in the region.

Managed by the local government and regulated by the Maine Emergency Management Agency (MEMA), Pattee Mill dam has a low hazard potential and has not been rated for its condition yet. Despite its age, the dam has not undergone any modifications in recent years and is inspected every 12 months to ensure its safety and structural integrity. With its scenic surroundings and ample recreational opportunities, Pattee Mill dam remains a popular destination for water resource and climate enthusiasts seeking a tranquil escape in the heart of Maine's natural beauty.

For those interested in water resource management and climate conservation, Pattee Mill dam stands as a symbol of sustainable development and responsible stewardship of natural resources. As a key infrastructure for water storage and flood control in the region, the dam plays a crucial role in balancing ecological needs with recreational demands, showcasing the importance of harmonizing human activities with the local environment. With its rich history and ongoing commitment to safety and sustainability, Pattee Mill dam exemplifies the potential for man-made structures to coexist harmoniously with nature, offering a model for future conservation efforts in the face of climate change challenges.

Year Completed

1979

Dam Length

110

Dam Height

15

River Or Stream

Pattee Brook

Primary Dam Type

Rockfill

Surface Area

8

Hydraulic Height

5

Drainage Area

22

Nid Storage

100

Structural Height

15

Hazard Potential

Low

Nid Height

15
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.