=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 05-May-1994 UP TO 1985 LEUPOLD & STEVENS GAUGE, 1985-1993 (OCTOBER) OTT GAUGE, 1993 (OCTOBER) - SONAR RESEACRH GAUGE =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 05-May-1994 REVISION OF MAY 1994 UPDATES DATA FROM AUTHORITY D6 =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 25-Nov-2010 Station flag was removed