Bluff Lake Diversion

Bluff Lake Diversion is a rockfill dam located in Ketchikan Gateway Borough, Alaska, built in 1984. It carries a Low hazard potential classification.

About Bluff Lake Diversion

The primary purpose of Bluff Lake Diversion 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 South Se Region Aquaculture Assoc (private). It impounds the Neets Creek.

The dam stands 10 feet tall and stretches 59 feet across, creates a reservoir covering 154 acres, has a maximum storage capacity of 1,450 acre-feet, and collects water from a drainage area of 7 square miles. Completed in 1984, the structure is 42 years old.

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. The most recent inspection on record was 09/13/2018.

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Low HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateAlaska
CountyKetchikan Gateway Borough
River/StreamNeets Creek
Coordinates55.77806, -131.45050

Physical Characteristics

Dam TypeRockfill
NID Height10 ft
Dam Height10 ft
Dam Length59 ft
Year Completed1984 (42 years old)

Storage & Hydraulics

NID Storage1,450 acre-ft
Max Storage1,450 acre-ft
Normal Storage1,000 acre-ft
Surface Area154 acres
Drainage Area7 sq mi
Max Discharge1,900 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeHydroelectric
OwnerSOUTH SE REGION AQUACULTURE ASSOC
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentNot Rated
Last Inspection09/13/2018
Emergency Action PlanNot Required

Identifiers

NID IDAK00184
Federal IDAK00184
More InfoState Dam Safety Program

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