=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 20-Nov-1991
BEFORE 1975 GAUGE AT MUELLE WASHINGTON, 34 55 S 56 13 W 1975-1983 GAUGE AT MUELLE MATARAS, 34 53 S 56 11 W
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 12-Jul-1993
Montevideo          870/011 RLR(1962) is 29.9m below BM Repere del Cabildo
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 14-Jul-1994
Record will be affected by the confluence of the Parana and Uruguay Rivers.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 21-May-2009
Data for 1995-2008 received from SOHMA. 1995 data had been revised. Full dataset entered plot 2003/4 seems low.