This information is not intended for navigational purposes.
Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Please recognize the U.S. Geological Survey (USGS) and the Southwest Washington Coastal Erosion Study (SWWCES) as the source of this information.
Data were reprojected to Washington Stateplane South-NAD83, FIPS 4602 and MLLW meters.
NAVD88 depths were calculated using the offset determined at the Westport tide gauge, where NAVD88 depth = -0.46m + MLLW depth.
The data set was evaluated for errors and/or inaccuracies and apparent problems with several tracklines were identified. There are six overlapping tracklines in this survey. Tracklines collected from west to east are problematic. Cartographic codes were changed to reflect this. Tracklines collected from east to west are coded 701-706. Tracklines collected from west to east are coded 881-887.
Soundings coded 881-887 should not be used for analysis.