From the record
“Ballast Island was a small artificial island located on the Seattle Waterfront during the late 1800s. Frequent illegal dumping of ballast led to the designation of a specific region of the Seattle harbor where dumping was permitted.”
Wikipedia article Ballast Island (Seattle), CC BY-SA 4.0.
One of 324 National Register listings published here for King County · listed in 2021 · category: Site.
Sources: the Wikipedia article · the National Register database, National Park Service




