Survey data on PDFs is referenced to Louisiana South State Plane Coordinates North American Datum 1983 with soundings below Low Water Reference Plane 2007 via N.G.V.D. gage in U.S. Survey Feet. XYZ files are in U.S. Survey feet referenced to N.G.V.D unless otherwise noted.

***Update*** - Raw water surveys removed from webpage on 10/2/2015.

Mississippi River Crossings - Recon Surveys
   Survey title Survey date
       Sheet Name    River mile PDF XYZ SHP
   Baton Rouge Front 10/19/2017
       MR_01_BRF    MM 233 to 229 PDF XYZ Shape
   Redeye 08/29/2017
       MR_04_RED    MM 225 to 222 PDF XYZ Shape
   Sardine Point 10/11/2017
       MR_06_SDP    MM 220 to 216 PDF XYZ Shape
   Medora 10/10/2017
       MR_08_MED    MM 213 to 208 PDF XYZ Shape
   Granada 10/10/2017
       MR_10_GRA    MM 206 to 203 PDF XYZ Shape
   Bayou Goula 10/10/2017
       MR_13_GOU    MM 199 to 196 PDF XYZ Shape
   Alhambra 10/17/2017
       MR_16_ALH    MM 192 to 189 PDF XYZ Shape
   Philadelphia Point 08/28/2018
       MR_19_PHP    MM 185 to 182 PDF XYZ Shape
   Smoke Bend 10/17/2017
       MR_22_SMB    MM 178 to 172 PDF XYZ Shape
   Rich Bend 10/03/2017
       MR_29_RIB    MM 160 to 156 PDF XYZ Shape
   Belmont 08/17/2017
       MR_30_BEL    MM 156 to 151 PDF XYZ Shape
   Fairview 09/25/2017
       MR_48_FRV    MM 117 to 111 PDF XYZ Shape