Low tide versus high tide at the mouth of the Gualala River. Jeanne Jackson • April 19, 2014 Julie Bower took two photos and set them side-by-side to show us the highs and lows of the tide at the mouth of the Gualala River. It's very interesting to see the difference! Thanks to Julie for allowing me to share her photos with you here. Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)