There is a small semi improved ramp about 8 miles upstream from the Astoria megler bridge. This is the site of an old abandoned cannary. You can launch here and fish just outside the last row of pilings or with no wind run down a few miles and fish along the WA shore. Also as stated before, launching at Eva's and fishing outside of deep river is a good option.
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You can always tell a fisherman, you just can't tell him much.