Underwater dumpsites or hazardous material sites lie in every ocean on the earth. A geographic information system (GIS) project documents the locations and associated data of Global Offshore Hazardous Materials Sites (GOHMS) potentially posing threats to human health, safety, navigation,
commercial fishing, and the environment. Nearly 350 sites are currently in the project. This paper discusses some of the history of hazardous materials disposal and loss at sea, primarily off the United States coast between 1945 and 1970 when few guidelines existed to geographically document
an underwater site. Although not publicly distributed at present, the GOHMS GIS project is intended to add value to existing historical information by providing site investigators and responders easy access to waste stream locations and other spatial data through NOAA's Office of Response
and Restoration and the National Marine Sanctuaries Program.
