The Digital Terrain Model of the Bay of Biscaye and of the Channel is the result of the processing of a compilation of single and multibeam echosounder data, of DTMs and of chart countours produced before 2008 for hydrodynamic modeling..

DTM of coast of Biscay and Guipuzcoa , approximately 250 m resolution. This DTM includes the whole area from coast line to deepest level (144,058 m)

DTM of continental margin of Cantabric Sea, approximately 200 m resolution. This DTM includes the whole area from coast line to deepest level (5216,74 m).