=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 12-Jul-1993
Urakawa II          641/027 RLR(1986) is 8.6m below Standard Mark
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 29-Aug-1995
A destructive earthquake and tsunami occurred in the Kuril Islands on 4 October 1994 - see Earth System Monitor, 5(4), June 1995.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 20-Aug-1997
In 1982 there was a severe earthquake near the station. A new tide gauge station was established in 1988.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 05-May-2009
Tokachi-Oki earthquake occurred on 26th September 2003 at 04.50 local time.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 02-Dec-2015
As the data points themselves have been flagged the station flag has been removed. PSMSL are awaiting further levelling information.