Arizona River Gauges — USGS Live Flood Stage
Source: U.S. Geological Survey (USGS)
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River Gauges (Flood) for {STATE.name}, latest reading.
What this means
USGS operates ~200 stream gauges across Arizona. Each gauge has a defined Action stage (cause for vigilance), Flood stage (water leaves the channel), and Major Flood stage (significant property damage expected).
What you can do
- If a gauge near you reaches Action, check for evacuation orders from your county emergency management.
- NOAA AHPS publishes 5-day forecast hydrographs for each gauge — see "AHPS" at water.weather.gov.
- Flooding from a Major-stage event is often covered by an emergency declaration for FEMA assistance.
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