The Gaia GPS map catalog is made up of a combination of basemaps and overlays.
- Basemaps are designed to function as a stand-alone map. They are not designed to be layered on top of each other. Technically, it is possible to layer basemaps by changing the opacity. Popular basemaps include: Gaia Topo, USGS Topo, NatGeo Trails Illustrated.
- Overlays are designed to be layered on top of a basemap. Generally, they contain data (roads, trails, boundaries) with a transparent background. Popular overlays include: MVUM (USFS), Private Land (US), Public Land (US), USFS Roads and Trails.
- Anything in the Feature/Weather Overlays or Hunting Overlays category is an overlay. Maps in all the other categories are basemaps.
Basemap Limits in the App
You can have a maximum of 5 active/visible basemaps at one time. There is no limit for overlays.
If you exceed the basemap limit you will receive the following error message:
Even if the opacity of a basemap is set to 0, the map source is still active and counts against the limit. Instead of setting opacity to 0, move any inactive map sources to the Inactive section of the layers list.
To remove a layer from the active or visible menu, tap the red "x" next to the layer.
Learn more here:
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