I've been told that there are charts that are available (from who or where is what I'm after) that show which direction the water will be flowing due to tidal movement. I know about tide tables, but these other charts apparently have quite a bit of detail, arrows and possibly colors.
I work with a group of Venture Scouts and we are heading out to do a sea kayaking trip in the San Juan Islands (Washington) in July and I'm looking for some detail on the tide flows.
First is there such a thing, and second do you know where they can be found. I figure you float plane guys or avid boaters would know about these.