Survey data on PDFs is referenced to Louisiana South State Plane Coordinates North American Datum 1983 with soundings referenced 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.

Mississippi River Crossings - Control Surveys
   Survey title Survey date
       Sheet Name    River mile PDF XYZ SHP
Mississippi River Shallow Draft Crossings
   Old River Control 08/02/2017
       MS_07_OLD    MM 315 to 309.5 PDF XYZ Shape
   Fort Adams Reach 08/02/2017
       MS_08_FAR    MM 309.5 to 305 PDF XYZ Shape
   Smithland - Sh. 1 06/21/2017
       MS_09_SM1    MM 305 to 300 PDF XYZ Shape
   Smithland - Sh. 2 08/01/2017
       MS_10_SM2    MM 300 to 296 PDF XYZ Shape
   Smithland - Sh. 3 08/01/2017
       MS_11_SM3    MM 296 to 291 PDF XYZ Shape
   Bayou Sara 07/25/2017
       MS_24_BYS    MM 267 to 264 PDF XYZ Shape
   Wilkerson Point 07/26/2017
       MS_39_WIL    MM 236 to 233 PDF XYZ Shape
Mississippi River Deep Draft Crossings
   Baton Rouge Front 06/09/2017
       MD_01_BRF    MM 233 to 229 PDF XYZ Shape
   Redeye 06/09/2017
       MD_04_RED    MM 225 to 222 PDF XYZ Shape
   Sardine Point 07/24/2017
       MD_06_SDP    MM 220 to 216 PDF XYZ Shape
   Manchac Bend 07/27/2017
       MD_07_MCB    MM 216 to 213 PDF XYZ Shape
   Medora 06/12/2017
       MD_08_MED    MM 213 to 208 PDF XYZ Shape
   Granada 08/09/2017
       MD_10_GRA    MM 206 to 203 PDF XYZ Shape
   Bayou Goula 07/26/2017
       MD_13_GOU    MM 199 to 196 PDF XYZ Shape
   Alhambra 07/18/2017
       MD_16_ALH    MM 192 to 189 PDF XYZ Shape
   Philadelphia Point 06/23/2017
       MD_19_PHP    MM 185 to 182 PDF XYZ Shape
   81 Mile Point 12/08/2016
       MD_21_81P    MM 180 to 178 PDF XYZ Shape
   Smoke Bend 08/08/2017
       MD_22_SMB    MM 178 to 172 PDF XYZ Shape
   Rich Bend 07/07/2017
       MD_29_RIB    MM 160 to 156 PDF XYZ Shape
   Belmont 07/10/2017
       MD_30_BEL    MM 156 to 151 PDF XYZ Shape
   Fairview 06/15/2017
       MD_48_FRV    MM 117 to 111 PDF XYZ Shape