&sq=&lang=&file=File:Question_book-new.svg){kind=small} | This article relies largely or entirely on a single source. (April 2023) |
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| Geography | |
|---|---|
| Location | Greenbrier River, West Virginia |
| Coordinates | 37°43′44″N 80°39′18″W / 37.7290095°N 80.6550799°W |
| Administration | |
Johnson Island is a bar in the Greenbrier River at its confluence with Muddy Creek in Alderson, West Virginia, United States.[1] The island lies in Greenbrier County, with the Alderson Federal Prison Camp located to its southwest across the county line in Summers County.