Rhode Island is a small, partially submerged island in the San Joaquin River delta, in California. It is part of Contra Costa County. Its coordinates are . It appears on a 1952 United States Geological Survey map of the area. References Islands of Contra Costa County, California Islands of the Sacramento–San Joaquin River Delta Islands of Northern California

From Wikipedia (CC BY-SA 4.0).

On IJR

No public IJR answers mention Rhode Island yet. As people ask about it and share their answers, they'll appear here.

Facts from Wikidata (CC0).

Overview

From Wikipedia (CC BY-SA 4.0).

Not who you're looking for? Others named Rhode Island: state of the United States of America