at mouth of Garden Cove, off Hinchinbrook I., 30 mi. SW of Cordova, Chugach Mts. 300 feet long.
Named by Captain Portlock (1789, p. 232), on June 6, 1787, while he and Captain Dixon visited the region on the English trading vessels Queen Charlotte and King George. Portlock had a garden planted on the island, probably to test the growing ability of numerous vegetables under the Alaskan climate and soil conditions.