Read the water where you are standing.
Point the phone down the road. FloodTruth draws a staged flood on the camera, stops it at the hill, and shows the depth in feet. Tap the edge you see. The next truck opens that mark.
The demo is Hurricane Helene’s recorded crest on the French Broad at Asheville. USGS gauge 03451500, 24.67 feet, 27 September 2024, laid on USGS 3DEP terrain as a level surface. It is not a forecast.
Water is over the axle.
On a call
Point the phone.
The flood surface draws on the camera. A hill hides it. Water does not paint over the ridge.
Read the feet.
The number is the staged surface at the phone. Zero is the ground elevation in that scene, reported in feet.
Mark the edge.
Tap the water you see. After the area is saved on the phone, the next crew can open the mark with the tower down.
The Helene crest, on the ground
The camera demo uses the recorded peak on the French Broad at Asheville. The water is a flat surface at that crest elevation on public USGS terrain. It shows where that surface sits in the viewfinder. It does not rerun the storm.
On a phone the rear camera, location, and compass are requested. On a desk, run the same scene with the camera off.
What it will not tell you
- It does not forecast the river.
- It does not change a FEMA flood map.
- It does not replace the incident commander, a gauge, or a measured high-water mark.
- A depth on the screen is the staged surface. It becomes a field mark only when someone taps the edge they see.