CHR_ID,ELEVATION,READ_DATE,DATUM_ADJ
31053400,143.10,1963-06-24,ASSUMED
31053400,1296.51,1966-04-13,NGVD 29
31053400,1297.35,2005-12-14,NAVD 88
31053400,1297.37,2009-11-19,NAVD 88