Note regarding the profile plots including 2008 data for north St. Johns:

The plots for R-86, 98, 101, and 109 have origin (0 x-axis value) at the
1999 through 2008 survey monument origins, and not at the historic base
monument origins. Refer to the MHWfile information table for comparative
information.

Plots from N. Nguyen 4/09
Note by E. Foster 4/24/09