div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=-vermi-ion-parish-gulf-of-data-sources-notes-1-measured-in-feet-relative-tohtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Vermi ion Parish Gulf Of Data Sources Notes: 1 Measured in feet relative to the National Geodetic Vertical Datum of 1929 NGVD29 To convert from NGVD29 to North American Vertical loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentssitereader033viewer20220416155e3ac613689c42087c7eac06html5thumbnails1jpg width=140 height=200 divdiv