Sea level has been rising by 0.07 inch (1.7 millimeters) per year since 1950, on a globally averaged basis. However, an average rise of 0.13 inch (3.3 millimeters) per year from 1993 to 2008 suggests that the pace of sea level rise is accelerating.

After looking closely at the volume of water that could come from glacial and ice sheet melt by the year 2100, scientists estimate that sea level could rise 2.6 feet (80 centimeters)—and that as much as 6.6 feet (2 meters) is possible, depending on the pace at which heat–trapping emissions are released.

Given mid–level scenarios for those emissions, the Maldives is projected to experience sea–level rise on the order of 1.5 feet (50 centimeters) by around 2100.4,9 The country would lose 77 percent of its land area by the end of the century.4 If sea level were to rise by 3.3 feet (1 meter) and the Maldives did not pursue further coastal protection measures, it would be nearly completely inundated by about 2085.

https://www.climatehotmap.org/global...-maldives.html

Lakshadweep islands are among the atolls that run the risk of becoming uninhabitable within decades because of regular heavy flooding of the islands by rising sea waves, damaging its freshwater sources, US scientists have warned.

Lakshadweep is not alone. A similar fate awaits Maldives and Seychelles too in the Indian Ocean beside several others in the Pacific such as the Marshall Islands, Caroline Islands, Cook Islands, Gilbert Islands, Line Islands, Society Islands and Spratly Islands

The annual flooding of these islands by waves, exacerbated by the rising sea, is likely to damage the freshwater resources in such a way that it would not be possible to live in many of these atolls that are a tourist paradise.

The flooding will also impact terrestrial infrastructure and habitats, but, more importantly, it will also make the limited freshwater resources non-potable and, therefore, directly threaten the sustainability of human populations.

The study carried out by scientists at the US Geological Survey in collaboration with four other institutes, predict it would not take more than a few decades to witness such overwash in many of these atolls.

“Island inhabitants will be unable to rely on groundwater, in many cases the sole source of fresh water, as a source of potable water in the next few decades, and thus, the islands will be uninhabitable by the middle of the 21st century — not by the end of the 21st century or the middle of the 22nd century as previously suggested,” scientists reported in the April 25 issue of the journal Science Advances.