Hello,
I've been using the link below to help locate state and national parks with high elevation and checking the available camping sites via google for public access and reviews etc.
The flood map allows for unlimited flooding, set the flood level to X +meters higher than your current location and see what comes up. The areas in green are normally state or national parks and can have good public access - street map overlays included.
Very easy way to check visually on the area around you...
Steve
https://www.floodmap.net/
Ps. It's free so a little clunky...