Woodland Reservoir Report

Last Updated: December 22, 2025

Woodland is a private hydroelectric dam located in Washington, Maine, along the Saint Croix River.


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Summary

Built in 1906, this concrete structure stands at a height of 46 feet and has a storage capacity of 18,400 acre-feet. With a normal storage capacity of 13,800 acre-feet, Woodland covers a surface area of 1,200 acres and has a drainage area of 1,350 acres.

Despite its age, Woodland's condition assessment in 2016 indicated a fair rating, with a high hazard potential. The dam has a spillway width of 717 feet and an inspection frequency of 6 years. It is regulated by the Maine Emergency Management Agency (MEMA), which oversees its permitting, inspection, and enforcement processes. In the event of an emergency, the dam's Emergency Action Plan (EAP) is in place, last revised in July 2020.

Woodland's presence along the Saint Croix River serves as a vital source of hydroelectric power in the region, contributing to renewable energy production. Its historical significance and environmental impact make it a key asset in Maine's water resource management efforts. Enthusiasts of water resources and climate conservation can appreciate the role Woodland plays in sustainable energy generation and the preservation of natural habitats along the river.

Year Completed

1906

Dam Length

1530

Dam Height

46

River Or Stream

Saint Croix

Primary Dam Type

Concrete

Surface Area

1200

Hydraulic Height

32

Drainage Area

1350

Nid Storage

18400

Structural Height

46

Hazard Potential

High

Nid Height

46
       
Seasonal Comparison

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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.