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Ross Island (Oregon)

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Ross Island is the main island of a four-island cluster in the Willamette River in Portland, Oregon, in the United States. The islands, covering a total of about 400acre, are owned mainly by Ross Island Sand and Gravel (RISG), which mined them extensively between 1926 and 2001. The other three islands are Hardtack, East, and Toe. Ross Island was named for Oregon pioneer Sherry Ross.The islands split the Willamette River into Holgate Slough on the east. They are about 1mi south of downtown Portland at river mile 15, the islands are slightly upriver (south) of the Ross Island Bridge between the Springwater Corridor Trail on the eastern shore and the South Waterfront on the western shore and slightly downriver from the Oaks Bottom Wildlife Refuge on the eastern shore and Willamette Park on the western shore. Ross is the longest of the islands, the closest to the western shore, and the closest to the Ross Island Bridge. Hardtack is to its east. East Island lies southeast of Hardtack, and Toe Island lies southwest of Ross. No bridge reaches the islands, which are approached only by boat.Ross Island is connected to Hardtack Island by an artificial levee built in 1926 by the U.S. Army Corps of Engineers in order to form a lagoon between the two islands. The lagoon made dredging easier for RISG and diverted water west of the islands, where it deepened a shipping channel.

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