SnoWake: This cache is located just off our 'home slough' where we do most of our riding. Interestingly, the cleanup of the slough (old junk boats, naked guy's flotilla, etc) has also made access to this location a bit harder. I looked again, the other day (after a stretch to make it off the dock we tied up to) - and the location is uninviting, and I couldn't find the cache in the time I was willing to spend.
Oh well - it had a good run. Will look for another alternative somewhere nearby...