Large Submarine Canyons

The purpose of this Atlas is to facilitate improved environmental management of the Outer Continental Shelf (OCS) by developing one depository of maps and information on major submarine canyons of the OCS. This Atlas provides the Bureau of Ocean Energy Management (BOEM) with geospatial and resource information to assist in the preparation of environmental documents. To accomplish this, submarine canyons were inventoried and delineated using a methodology consistent with terrestrial watershed mapping. A criteria-based algorithm generated spatial polygons used to calculate canyon slope, length, and depth. A concurrent literature review was conducted, which provided the notable facts seen in the Atlas

To download a PDF file of this report, go to the US Department of the Interior, Bureau of Ocean Energy Management Data and Information Systems  webpage , click on the link for the Environmental Studies Program Information System (ESPIS), and search on 2019-066. The report is also available at the  National Technical Reports Library .