Sysladobsis Lake

Sysladobsis Lake is an earth dam located in Washington County, Maine, built in 1861. It carries a Low hazard potential classification and has a satisfactory condition assessment.

About Sysladobsis Lake

The primary purpose of Sysladobsis Lake is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Woodland Pulp, Llc (private). It impounds the West Branch St. Croix River near Grand Lake Stream.

The dam stands 9 feet tall and stretches 250 feet across, creates a reservoir covering 5,400 acres, has a maximum storage capacity of 123,555 acre-feet, and collects water from a drainage area of 162 square miles. Completed in 1861, the structure is one of the older dams in the region, with over a century and a half of service.

This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 09/27/2018.

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Low HazardSatisfactory ConditionEmergency Action Plan: Not Required

Location

StateMaine
CountyWashington
Nearest CityGrand Lake Stream
River/StreamWest Branch St. Croix River
Coordinates45.21150, -67.97030

Physical Characteristics

Dam TypeEarth
NID Height9 ft
Dam Height9 ft
Dam Length250 ft
Year Completed1861 (165 years old)

Storage & Hydraulics

NID Storage123,555 acre-ft
Max Storage123,555 acre-ft
Normal Storage123,555 acre-ft
Surface Area5,400 acres
Drainage Area162 sq mi
Max Discharge1,100 cfs
Spillway TypeControlled

Ownership & Safety

PurposeHydroelectric
OwnerWoodland Pulp, LLC
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection09/27/2018
Emergency Action PlanNot Required

Identifiers

NID IDME00602
Federal IDME00602
More InfoState Dam Safety Program

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