HomeMy WebLinkAboutCity of Angoon Scenery Flyer_rev03 11-09City of Angoon, Alaska
The proposed Project would be located in an
unincorporated area, 25 miles northeast of
the City of Petersburg, Alaska. The
Project would utilize the natural and raised
impoundment of Scenery Lake, a
precipitation and glacial-fed body of water.
Generation Features
Usable Stored Capacity 18,000 af
Operational Draw‐down 30 ft
Elevation Drop 950 ft
Average Annual Flow 245 cfs
Power Conduit (diameter/length) 8‐ft / 13,000‐ft
Installed Capacity 30 MW
Turbine Type / Number Francis / 2‐4
Estimated Average Annual Energy 130 GWh
Estimated Capital Cost $90 ‐ 100 million
FERC No. 13365-000
Scenery Lake Hydroelectric Project
Development of hydroelectric
power at the site would include:
Dam. The current elevation of Scenery
Lake is 957’. A concrete core rock-filled
dam of up to 15’ high is proposed.
Lake Tap or Siphon Lake Tap/Power
Conduit. The inlet works will consist of
either a lake tap or a siphon system with a
screened intake. Water would be withdrawn
through the screened intake into an
approximately 13,000’ long, 8’ diameter buried steel penstock and delivered to the powerhouse.
Spillway. A spillway would be provided for discharge from the storage reservoir as necessary.
Penstocks. The power conduit will be an 8’ diameter buried steel penstock.
Powerhouse. The powerhouse would be located approximately 1,000’ from the mouth of Scenery Creek. The
actual site would be dependent on environmental and economic considerations. The powerhouse would
contain two to four Francis turbines, each with a rated head of 950 feet, and a combined designed flow
capacity of 400 to 600 cubic feet per second (cfs).
Tailrace. Discharge from turbines would be
directed by a short tailrace into Scenery Creek.
Access Roads. The Project is separated from the
nearest town of Petersburg by Frederick Sound.
The only access for either construction or long-
term operation and maintenance of the Project
would be via boat or aircraft. A new dock or
landing would be constructed near the mouth of
Scenery Creek as well as a new road for
construction, operation and maintenance of the
facility. Construction access would also be
provided by seaplane and/or helicopter in
addition to the dock and road system.
Mayor Albert Howard
City of Angoon, Alaska
P.O. Box 189, Angoon, AK 99820
(907)788-3653
SCENERY
LAKE