Explore the map
Layers off by default, in the layer switcher (top right):
- MRMS 24-h radar rainfall: the 10-plus-inch bullseye over the Fannin–Gilmer line.
- Modelled depth at the crest is on by default and appears when the clock reaches the 18.05 ft crest: 10 m depth classes from the DisasterAWARE flood enhancer's preview record (NWS CatFIM/HAND). The deepest class is mostly the river channel.
- CatFIM inundation is on by default and follows the gauge: drag the clock back to watch the modelled extent grow through McCaysville and Copperhill as the stage climbs; it stays at the highest stage reached.
- FEMA flood hazard zones: how much of McCaysville and Copperhill sits outside the mapped 1% zone.
- DisasterAWARE warning records: the platform's alert polygons with population and capital exposure.
- All river gauges: the Toccoa above Blue Ridge Dam barely rose; the record came from the creeks below it.
- Satellite basemap: the valley floor the river filled.
Deep links: #t=2026-11-05T09:00Z, #layers=mrms,nfhl,dae,gauges, #base=sat, #c=34.99,-84.38&z=13.