I use Wxtide, which is a windiws port of X-Tide.
http://www.wxtide32.com/

It seems to have lots of Columbia river locations, but I don't know
the area.

Cheers,
Michael Porter

Brian D. Lawrence wrote:

I sail the Columbia River. I would like to find a chart plotter that
has chart tables that cover the tidal influence - which runs all the
way to Portland Oregon. I don't NEED it I WANT it.

I currently have a Garmin GPSMAP 492C. The last tide station it
displays in Knappa Slough, Oregon side. PC based programs seem to
have many more prediction points - as far east a Bonneville Dam.

Garmin has responded to questions but only with the answer that "the
eastern most tide station and prediction is Knappa Slough."

Any input?
Michael Porter Marine Design
mporter at mp-marine dot com
www.mp-marine.com

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