extends NW off Clarence% Strait, on E coast of Prince of Wales I., Alex. Arch.
Named in 1891 after Frank Manley Thorn, Superintendent of U.S. Coast and Geodetic Survey (USC&GS) from 1885 to 1889; misspelled when published.
Baronovichs Bay, Clark Bay, Coal Bay, Forss Cove, Harris River Bay, Hollis Anchorage, Karta Bay, Kasaan Bay, Kina Cove, Linney Bay, Little Coal Bay, Little Ratz Harbor, Mills Bay, Poor Man Bay, Ratz Harbor, Smith Lagoon, Thorne Bay, Tolstoi Bay, Twelvemile Arm, Twelvemile Arm Kasaan Bay, Twelvemile Bay, Windfall Harbor,
Adams Point, Alder Point, Althouse Point, Baker Point, Ernest Point, Figgins Point, Kasaan Peninsula, Mound Point, Narrow Point, Onslow Point, Outer Point, Sandy Point, Sawmill Point, Thorne Head, Tolstoi Point,
Lake Number Three, Lake Number Three, Angel Lake, Big Lake, Copper Center Lake, Lake Ellen, Foot Lake, Ives Lake, Karta Lake, Kina Lake, Lindeman Lake, Little Lake, Loon Lake, North Lake, Power Lake, Salamander Lake, Salmon Lake, Setter Lake, Trumpeter Lake, Water Lake, Wolf Lake,
Andersen Creek, Deer Creek, Falls Creek, Flagstaff Creek, Goose Creek, Gravelly Creek, Halfmile Creek, Hundred Thousand Creek, Indian Creek, Kina Creek, Linkum Creek, Little Ratz Creek, Maybeso Creek, McGilvery Creek, Paul Young Creek, Poor Man Creek, Sal Creek, Slide Creek,