SCALGO Live Documentation

Sea-level rise

Sea-level rise layers are located under the Sea-Level Rise section in the layer selection menu, or designated as "Sea-level rise" when they appear in workspaces. SCALGO Live supports showing the flooded areas for any given sea-level rise – simply use the Water Level slider to set the desired value.

Flooded areas (marked in blue) are any part of the terrain that can be reached from the sea by at least one path that never exceeds the set sea level. Use the point query tool to determine for any point how much the sea level needs to rise before the point gets flooded from the sea.

The video below illustrates some different sea-level rise scenarios.

Demonstration of sea-level rise analysis focusing on a small island which is sorrounded by a narrow roughly 5 meter tall dike. Notice the use of point queries to get the exact sea level at which a particular location is flooded.

Critical points

With the critical points layer, you can visualize the critical points in the terrain where seawater intrusion can occur and lead to significant flooding in low-lying areas behind the critical point. A critical point is defined as a point in the terrain that blocks seawater from a large area of the terrain. Each critical point is annotated with the area (and volume) of the protected area as well as the minimum sea level at which the point is flooded.

For a given sea level (set using the sea-level slider), critical points that flood at that sea level are shown as black dots. As the sea level increases, the size of the dots decreases until they disappear completely to allow you to focus on the critical points close to the frontier of the flooding.

The critical points analysis comes with an additional slider that lets you filter critical points according to the protected area. For example, if you set the value at 500 m2, you will only see the critical points where at least 500 square meters of lower-lying areas are flooded when the critical point is flooded by seawater.

Use the point query tool to determine the critical sea-level rise for any critical point, or get information about the area and volume of the flooding behind the point.

Demonstration of sea-level critical points.