Toggle a Checkbox to Show Map Layers
The data layers for this map are best viewed individually, as some will hide others and they are large files. Also, additional static maps, some not available in these interactive maps, are available here.
How to use these maps:
If you see in the list above, click it to see that item's map key. Click the checkboxes in the same list to toggle data layer visibility.
Click on the different markers, such as , and colored areas on the map to find more information and videos.
If a layer is hidden underneath others, turn it off and back on, then it will be on top.
We endeavor to keep these maps up-to-date, but they will not always be as recent as primary sources.