at head of Duncan Canal, 12 mi. W of Petersburg, on Kupreanof I., Alex. Arch.
HistoryLocal name recorded in 1960 by U.S. Geological Survey (USGS).
Bains Cove, Cape Strait, Dry Cove, Goose Cove, Little Duncan Bay, McDonald Arm, North Arm Duncan Canal, Portage Bay, Towers Arm,
Capes:Boulder Point, East Point, Flat Point, Goose Point, Hook Point, Indian Point, Lindenberg Peninsula, West Point,
Channels:Islands:Big Castle Island, Cloverleaf Island, Emily Island, Grief Island, High Castle Island, Kupreanof Island, Rookery Island, Stop Island,
Lakes:Petersburg Lake, Salt Chuck, Towers Lake,
Mountains:Ambler Peak, Chipp Peak, De Long Peak, Duncan Peaks, Hall Peak, Hunt Peak, Kane Peak, Kupreanof Mountain, Lockwood Peak, Portage Mountain, Putnam Peak,
Mountain Passes:Mitchell Slough, Ohmer Slough,
Mountain Ranges:Bohemian Range, Missionary Range,
Rivers:Streams:Duncan Creek, Middle Creek, Taylor Creek,
Routes:Duncan Canal Portage, Petersburg Trail, Portage Mountain Loop Trail,