Coastal Viewer/CRC Sea Level Rise Impacts

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Overview

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This viewer shows results of flood modeling (ʻExposureʻ) from a variety of sources in the legend on the right side of the window. By default, the “Passive Flooding” layers “Marine Connected Flooding” and “Low-lying Areas” are toggled on. Each section can be minimized by clicking the horizontal arrow head next to the section name.

Layers: On the right side of the window is the “Layers” of Legend for the map. The legend controls which layers and basemaps are shown on the map. The legend is divided into sections labeled Basemaps, Exposure, Impacts, and Other Overlays.

Basemaps: The first section, at the top of the legend, is “Basemaps.” Basemaps allows the user to change the background map from the default of Openstreetmap to a satellite image mosaic with or without labels.

Exposure: The next section, “Exposure,” shows the results of the CRCʻs modeling of current and potential future impacts of flooding from:

1. Passive flooding
2. Groundwater inundation
3. Drainage backflow
4. Annual recurring high wave-driven flooding
5. A compound flood scenario
6. Erosion hazard zone

Each of these are described in detail in their respective sections. Linked through the text above or through the      information button located next to the layer name. Each layer can be toggled on and off.

Other Overlays: On the left side of the window, there is the sea level rise slider that, when clicked on, can be slid up or down to specific increments of sea level at MHHW. The “Expected by” timeline is controlled using the scenario buttons above the slider: ʻIntermediateʻ and ʻIntermediate Highʻ. Additionally, the viewer shows potential impacts of modeled flooding to infrastructure (roads, stormwater drains) while also overlaying  critical facilities, wastewater and electrical  infrastructure to help visualize potential impacts of flooding