Sysladobsis Lake Reservoir Report
Nearby: Farm Cove West Grand Lake
Last Updated: December 21, 2025
Sysladobsis Lake, also known as Dobsis Dam, is a mesmerizing water resource nestled in Grand Lake Stream, Maine.
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Summary
This private lake is fed by the West Branch St. Croix River and serves as a vital hydroelectric source with a dam type classified as Earth. The dam, completed in 1861, stands at a height of 9 meters and spans 250 meters in length, boasting a storage capacity of 123,555 acre-feet and a surface area of 5,400 acres.
Managed by the Federal Energy Regulatory Commission, Sysladobsis Lake presents a low hazard potential despite its very high risk assessment ranking. The controlled spillway, outfitted with two slide gates, ensures efficient water flow management. Although the condition assessment is not available, the lake's emergency action plan and risk management measures contribute to its overall safety and operational efficacy. With its serene beauty and hydroelectric significance, Sysladobsis Lake stands as a captivating destination for water resource and climate enthusiasts alike.
This picturesque lake in Washington County, Maine, offers a glimpse into the intricate balance between nature and human intervention. As a primary source of hydroelectric power, Sysladobsis Lake plays a crucial role in the region's energy infrastructure. With its rich history dating back to the 19th century, this Earth dam continues to provide sustainable energy solutions while maintaining a harmonious relationship with its surrounding ecosystem. Discover the allure of Sysladobsis Lake and witness firsthand the intersection of innovation and environmental stewardship in this breathtaking water resource.
Year Completed |
1861 |
Dam Length |
250 |
Dam Height |
9 |
River Or Stream |
West Branch St. Croix River |
Primary Dam Type |
Earth |
Surface Area |
5400 |
Drainage Area |
162 |
Nid Storage |
123555 |
Outlet Gates |
Slide (sluice gate) - 2 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
9 |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
third lake outlet camp
|
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fifth stream campsite
|
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third machias camp
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Sysladobsis Lake