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 and combined.
NAVD88 depths were calculated using the offset determined at the Ft. Stevens tide gauge, where NAVD88 depth = -0.16m + MLLW depth.
The data set was evaluated for errors and/or inaccuracies and cartographic codes were changed. Soundings on the northernmost line appear about 1m too deep; soundings on line 2nd from the north appear about 2.5m too deep. These two lines were given a cartographic code of 999 and should not be used for analysis.
The data set was formerly known as pcoe98pts