Deep Water, also known historically as Deepwater, is a census-designated place on the Kanawha River in Fayette County, West Virginia, United States. As of the 2020 census, its population was 183 (down from 280 at the 2010 census). It is best known as the starting point of the Deepwater Railway founded in 1898 by William N. Page, which was merged to create the Virginian Railway in 1907.