Great Works Stream Reservoir Report
Nearby: Gilman Mill Milford
Last Updated: December 20, 2025
Great Works Stream in Maine is a state-regulated water resource with a timber crib dam completed in 1963.
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Summary
The dam stands at 8 feet high with a hydraulic height of 6 feet and a length of 178 feet, creating a storage capacity of 55 acre-feet. The primary purpose of the dam is listed as "Other," with recreational activities also being a key use of the area.
Located in Penobscot County, Great Works Stream offers a surface area of 75 acres and a drainage area of 0. Despite its low hazard potential, the dam has not been rated for its condition as of yet. The last inspection was conducted in November 2001, with inspections occurring every 12 years. With a state jurisdiction and regulatory agency in place, the dam's management and enforcement are well-established to ensure its safety and compliance with regulations. For water resource and climate enthusiasts, Great Works Stream presents an intriguing case study of a historic dam contributing to the local ecosystem and recreational opportunities.
Year Completed |
1963 |
Dam Length |
178 |
Dam Height |
8 |
River Or Stream |
Great Works |
Primary Dam Type |
Timber Crib |
Surface Area |
75 |
Hydraulic Height |
6 |
Nid Storage |
55 |
Structural Height |
8 |
Hazard Potential |
Low |
Nid Height |
8 |
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.
Great Works Stream