Sea Level Simulator

Simulate sea level rise and its impact on coastal areas worldwide. Powered by CGIAR-CSI SRTM elevation data and SCALGO hydrological flood modeling, explore how sea levels from -1m to +100m redraw global coastlines, submerge lowlands, and reshape continents.

+10 m Current Threshold

90 m DEM Resolution

Gulf of Mexico Active Region

Satellite Basemap Style

Sea Level Control

Sea-level threshold: +10 m

-1m 0m +25m +50m +75m +100m

Basemap Style

Water Layer Opacity: 60%

Gulf of Mexico & Mississippi Delta

Low-lying Mississippi River Delta and Florida Peninsula, among the most vulnerable coastal zones in North America.

Flooded Lowlands: Hydrologically connected inundation

Elevation Model: CGIAR-CSI SRTM 90m v4.1 via SCALGO

Global Sea Level Impact Scenarios

Explore how varying degrees of sea level rise correspond to climate equilibrium states and human civilization milestones.

Glacial Regress Lowered Baseline (-1 m)

Simulates lowered global sea levels prior to recent anthropomorphic heating or during cooler glacial fluctuation stages.

IPCC 2100 Median +1 Meter Rise

Projected near-term high emission trajectory by 2100. Routine high-tide flooding of sunny streets in Miami, Venice, and Jakarta.

Ice Shelf Disruption +5 Meters Rise

Triggered by rapid disintegration of West Antarctic marine-terminating ice shelves and accelerated Greenland peripheral ice loss.

Major Inundation +10 Meters Rise

Complete disappearance of southern Florida, large portions of Bangladesh, the Netherlands coastal ring, and Shanghai lowlands.

Multi-Century Collapse +20 Meters Rise

Multi-century equilibrium state under sustained elevated atmospheric CO2 levels, submerging lowlands and shifting continental shorelines.

Total Deglaciation +60 Meters Rise

Catastrophic melting of the entire Antarctic and Greenland ice caps. Complete redrawing of Earth's continental maps.

Methodology & Hydrological Modeling

Unlike simplistic “bathtub” models that flood all terrestrial pixels below a given elevation regardless of inland topography, this visualization employs SCALGO’s hydrological flow engine. A terrestrial cell is only marked flooded if it is hydrologically connected to the open sea or ocean basin without natural or artificial terrain barriers blocking water intrusion.

Elevation Source (SRTM 90m v4.1)

Shuttle Radar Topography Mission (SRTM) digital elevation model provided by the CGIAR Consortium for Spatial Information (CGIAR-CSI). Provides continuous global topographical coverage between 60°N and 56°S latitude at 3 arc-second (approx. 90-meter) resolution.

WMTS Tile Service & EPSG:3857

Tiles are requested dynamically over the Web Map Tile Service (WMTS) specification in Web Mercator projection across zoom levels 0 through 14. Modifying the sea-level threshold sends updated dimension query keys to the tile generator to refresh inundation contours in real time.