Where is MEPTE

How can I find out where the FAA thinks MEPTE is? On the NOS IFR charts
it's charted as in the water (or over it), but when I fly it, it's over
land. I know the NOS charts are not all that accurate (for topography)
but I'd like to know where it is, for a certification flight for our GPS.

Any ideas?

Jose
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