The western entrance to Towers Bay, on Kupreanof Island, on the W side of Duncan Canal, 14 mi. W of Petersburg, Alex. Arch.
Local name recorded in 1951 by U.S. Geological Survey (USGS).
Bains Cove, Dry Cove, Goose Cove, Little Duncan Bay, McDonald Arm, North Arm Duncan Canal, Portage Bay, Towers Arm,
Capes:Flat Point, Goose Point, Hook Point, Indian Point, Lindenberg Peninsula,
Channels:Islands:Big Castle Island, Cloverleaf Island, Emily Island, High Castle Island, Kupreanof Island, Rookery Island, Stop Island,
Lakes:Irish 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: