ChatGPT says all ice melt could raise sea level 230 feet, and someone mapped New Jersey

reditjohn · reddit · 2026-07-21

A Reddit post pairs ChatGPT’s estimate that melting all land ice would raise sea level by about 230 feet with a New Jersey flood map showing how the state would change at different sea-level scenarios.

The image notes that 230 feet is a theoretical maximum, while most of the map panels show much smaller rises by 2100, 2200, and later centuries. It also says the timeline would depend on emissions and ice-sheet response, with the full melt taking thousands of years.

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