U.S. Flood Gauge Map
Lower 48 · live NWS flood warnings + gauges, USGS stage, FEMA zones — loaded per view. Click any feature.
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Layers
(order with ▲▼)
Zoom in to city level (≈ zoom 12) to see FEMA flood zones.
Emergency Alerts (IPAWS)
Tornado Warning
Severe Thunderstorm
Tropical / Hurricane
Evacuation / Civil Emergency
Marine / Tsunami
Active Flood Warnings
Flash Flood Warning
Flood Warning
Flash Flood Watch
Flood Watch
NWS Gauge Status
Normal
Action stage
Minor flooding
Moderate flooding
Major flooding
No current data
USGS stream gauge
Weather Radar
Light
Heavy
FEMA Flood Zones
High-risk (1% annual: A, AE, AH, AO)
Regulatory floodway
Coastal high hazard (V, VE)
0.2% annual chance (500-yr)
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© 2026 Lean Informatics
© 2026 Lean Informatics