Gulch Island is located in the Goldfields-Esperance region of Western Australia.Gazetteer of Australia (1996). Belconnen, ACT: Australian Surveying and Land Information Group.
The island is approximately in length and rises to a height of about . It is situated about off-shore from the beaches west of Cape Arid. Composed of granite, the island is part of the group of islands, islets, and rocks that make up the Recherche Archipelago.
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