Abstract: Hydrographic survey data was collected using Reson 8101, Elac 1180 and Elac 1050D multibeam echo sounders onboard the NOAA ship RAINIER and NOAA ship RAINIER survey launches during the months of October, 2001-2004. Data were cleaned of anomalies and exported to xy-z data format and gridded at 5m resolution in Fledermaus. Data were then converted to ESRI grid format.
Purpose: The data represent seafloor topography at 5 meter resolution for an area around Cape Flattery, roughly offshore of Makah Bay. Depths range from approximately -46m to -166m.

Progress: Complete
Update Frequency: As needed

Theme Keywords: NOS Topic Category , Bathymetry/Topography , ISO 19115 Topic Category , oceans , None , hydrography , multibeam echosounder , bathymetry , seafloor
Place Keywords: Olympic coast national marine sanctuary , Cape Flattery , Makah Bay

Access Constraints: Hydrographic multibeam data acquired between 46 N latitude and the Canadian border, and between the 50m depth contour and the Exclusive Economic Zone boundary are classified SECRET under the NOAA 1-89 security classification guide. A NOAA/NAVY Joint High Resolution Bathymetry (HRB) board will review applications for unclassified NOAA HRB data acquisition and release in this submarine security zone on a case-by-case basis. Data for this area have been cleared for unrestricted release.
Usage Constraints: See access constraints