=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-Jun-1991 Wakayama 643/015 RLR(1976) is 8.8m below Attached BM =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 12-Jul-1993 Wakayama 643/015 RLR(1976) is 8.8m below Attached BM =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 26-Mar-2002 Wakayama replaced by new gauge on same site July 1980. =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 20-Nov-2003 Datum 1996 is 1.037m below Tokyo Peil. Datum 1998 is 1.042m below Tokyo Peil. =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 24-Feb-2011 Sea level profile compares well with that for Kainan. =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 21-Feb-2012 A massive earthquake magnitude 9.0 occurred at 14.46 JST (05.46 UTC) on Friday 11th March 2011 with epicentre approx. 70 km east of the Oshika Peninsula of Tohoku. It was the most powerful known earthquake to hit Japan triggering a tsunami with waves up to 40.5m and travelling up to 10km inland.