in Popof Strait in Shumagin Is., Aleutian Range
Named Popoff Reefs by .H. Dall, US@C&GS, and shown on an 1872 US@C&GS chart.
Caton Shoal, Popof Reef, Unga Reef, Unga Spit, Weedy Shoals,
Bays:Balboa Bay, Baralof Bay, Ben Green Bight, Blind Breaker, Coal Harbor, Delarof Harbor, Fox Hole, Humboldt Harbor, Lefthand Bay, Lumber Bay, Mud Bay, Pirate Cove, Red Cove, Shoal Bay, Simeon Bay, Zachary Bay,
Beaches:Capes:Cross Cape, Danger Point, East Head, Hardscratch Point, North Head, Quartz Point, Sand Point, Swedania Point, Unga Cape, West Head,
Channels:Korovin Strait, Popof Strait, Unga Strait,
Cliffs:Dark Cliffs, Popof Head, White Bluff,
Dams:New England Fish Company Dam Sand Point, Squaw Harbor Dam,
Hills:Islands:Arch Rock, Cross Island, Egg Island, Elephant Rock, Guillemot Island, Gull Island, Halfway Rock, Henderson Island, High Island, Kelly Rock, Little Egg Island, Popof Island, Range Island, Range Islet, Round Island, Unga Island,
Mine:Mountains:Apollo Mountain, Bloomer Peak, Red Mountain,
Cities: