Arcol has US Wetlands and FEMA Flood Hazard layers as defaults. To turn on these layers, go to the View tab of the right sidebar and click the eye icon beside the desired layer in the Map Layers section.

Arcol currently supports importing ArcGIS MapServers and XYZ Raster tilesets via URL.
To add a custom map layer:
+ in the top right of the Map Layers sectionAdd New + tab in the menu that appearsImport to add the layer
Different map layer formats have different parameters, and may require adjustment after importing to display properly. To edit a map layer, hover on the layer name in the May Layers section and click the edit button that appears.
