Location of Gage :

Mississippi River mile 173.6 on right descending bank at the CF Industries dock.

 Adjustment for vertical datum NAVD88 (OPUS 2010):  -0.88 ft. 
(e.g. for data relative to NAVD88 subtract 0.88 ft.)  This adjustment is only for data after 14June1988.

 To adjust NAVD88 (OPUS 2010) values to 2007 Low Water Reference Plane (LWRP) datum relative to NAVD88, subtract 1.4 ft.

 ** Raw data, subject to change **