FMT has been in they Keys for several weeks post Irma looking into it as we have our SFL home base at Ground Zero. Surprisingly, virtually all of the pre storm markers survived although many were leaning a bit. The larger markers with big signs took the most damage. All of the small posts and PVC stakes we ran all survived which when you think about make sense as there is virtually no resistance to wind with them. We saw a number of smaller buoys had been blown around and out thier regular place in a few areas but nothing substantive.
We found Most of the new 4x4 posts in ENP survived and I found no changes from Jewfish Creek up into lower Biscayne Bay at Midnight Pass where we added some new tracks last week. A few 4x4 posts in ENP were missing and a few were leaning but it appeared more than 95% were there and most had no damage. We are still looking mbut so far it appears the runs through smaller cuts and short cuts etc. are all unchanged. We have found no adjustments needed so far to any previously drawn tracks. The shoreline is trashed in a lots of areas and all the green will take a while to return and there is plenty of floating debris and trash around but that is the lions share of the landscape change.
In previous storms we found the changes at the inlets and passes along the coasts where there are sandbars and continuously moving sand. That is likely also the case again but these areas are all caveated on FMT Charts for caution due to the continuously moving sand. We have not looked at all of these bars yet to see what changes occurred if any and if track changes are required but I expect a few adjustments will be made in and around these passes. I expect little to no changes in the Keys in keeping with our recent findings and past storm experience. We will be running hard in the lower keys backcountry over the next two days during these negative tides to do a final check. If we find the cuts in and around Contents and Big Pine are unchanged, it is highly unlikely any other areas in the Keys back country would require adjustments either. If we find any substantive track changes are needed we send out emails to customers advising of the specifics.