The NIVMER program aims to maintain and develop the ROSAME tide gauges network as part of the SONEL French Observing System and in the frame of the international GLOSS program.This program is complementing several research and monitoring, national and international, programs using in situ sea level observations in the Indian sector of the Southern Ocean (long term sea level change, tsunami warning system, satellite calibration,). This tide gauges network is the French contribution in this part of the ocean to the GLOSS core network.