Tide Tables - Based on the Mouth of the Columbia River
The weather and tides of the Southwest Washington Coast are predictable to a point. Since clams like to hide in the sand, they usually frequent areas that are covered by ocean waves except during periods of "minus" tides.
For the first time, NOAA has published their tide tables with a correction for the North Jetty of the Columbia River.
Feel free to download this Tide Table for use in planning your dig tides, for fishing, beach, or river access in the areas surrounding the mouth of the Columbia River and the Peninsula beaches.
The link above will take you to NOAA's website to downlaod a 5 page PDF.