Arizona flood alerts

Check your location for active National Weather Service alerts, then use the live statewide map to see alert areas and nearby stream gages.

Live Arizona flood map

Live National Weather Service alert areas and USGS stream-gage readings. Turn on FEMA mapped flood zones for long-term floodplain context.

Open Arizona Flood Warning System
Loading live statewide data…

Loading the live map…

Active flood alert USGS stream gage

Map data is live and can change quickly. A map is not a road-safety clearance—follow closures and emergency directions.

Read active flood alerts as text

More live flood data

Maricopa County rain and stream gages

5-minute updates from the Flood Control District's ALERT network.

Open ALERT map ↗

Arizona Flood Warning System

Statewide automated flood detection network.

Open AFWS ↗

Pima County Regional Flood Control

Stream flow, rain gauges and flood risk info for the Tucson metro.

Open RFCD ↗

Flagstaff and Coconino County

Post-fire flood risk, emergency alerts and preparedness.

Coconino flood info ↗

If life is in danger, call 911.

What to do

I'm driving and see water on the road
  1. Turn around, don't drown. Six inches of moving water can knock a person down. Twelve inches can carry a vehicle.
  2. Do not drive around barricades. Under Arizona's A.R.S. 28-910 (the "Stupid Motorist Law"), drivers who enter a flooded roadway past barricades or barriers can be charged for the cost of their rescue.
  3. If your car stalls in water, get out and move to higher ground immediately if you can do so safely. Do not stay in a vehicle that is being swept away.
  4. Report road closures and flooding via AZ511 or 511 from any phone.

Do not: attempt to gauge water depth by looking at it. Floodwater hides washed-out pavement, open manholes, downed power lines and debris.

A flash flood warning was just issued for my area
  1. Move immediately to higher ground. Do not wait for instructions if you are near a wash, creek or low-lying area.
  2. Avoid washes, drainage channels, canyons and any areas that channel water, even if they are currently dry.
  3. If indoors and on high ground, stay there. Monitor NWS Phoenix or NWS Flagstaff and local radio for updates.
  4. Have a plan to leave quickly: shoes on, phone charged, important documents in a bag.

Then: warnings typically last 2-6 hours. Wait for the warning to expire or for official all-clear before returning to low areas.

I'm in a wash, canyon, trail or slot canyon
  1. Go to high ground immediately. Rain miles upstream can send a wall of water through a dry canyon under clear skies.
  2. Move up and away from the channel, not downstream. Climb the sides if possible.
  3. In a slot canyon, there is often no high ground. Get out entirely by the quickest route. If you cannot get out, climb as high as you can.
  4. Check the forecast before entering any canyon or wash. If there is any chance of rain in the watershed, do not enter.
Water is coming into my house or yard
  1. If you can safely reach the electrical panel, turn off the main breaker. Do not wade through standing water to reach it as it may be electrified from downed lines or submerged outlets.
  2. Move to a higher floor or higher ground if water is rising inside.
  3. If you have sandbags or barriers, place them at door thresholds and garage entries. Even towels or plastic sheeting can slow water entry.
  4. Move valuables and documents above the expected water line.
  5. Photograph damage for insurance before cleaning up.

Then: contact your insurance company. Standard homeowners policies do not cover flood damage. If you have NFIP or private flood insurance, file a claim promptly.

I need to evacuate
  1. Follow your county's Ready, Set, Go levels: Ready = be aware; Set = be prepared to leave; Go = leave now.
  2. Grab your go bag: medications, IDs, phone charger, water, cash, important documents.
  3. Bring pets. Most Red Cross shelters do not accept animals, but your county emergency management can direct you to pet-friendly options.
  4. If you do not have a place to go, call 211 Arizona for shelter information.
  5. Follow your county emergency management's official channels for evacuation routes. Do not take shortcuts through low-lying areas.
After the flood: is my drinking water safe?
  1. City or utility water: check with your provider for boil-water notices. Search your address on the main page to find your provider's safety record and contact info.
  2. Private well: if floodwater reached or came near your well, do not drink from it. The well casing, cap and seal may have been compromised. Follow CDC guidance on well disinfection, and test with an ADHS-licensed lab before using the water again.
  3. Hauled water: use a hauler from this directory and ask whether they draw from a tested public system.
  4. Use bottled water for drinking and cooking until you have confirmed your source is safe.

Then: even after water recedes, bacteria, chemicals and sediment can persist. If water looks, smells or tastes different, do not assume it will clear on its own.

I live in a burn scar area
  1. After a wildfire, burned ground repels water and dramatically increases flood and debris-flow risk. Even light or moderate rain on a burn scar can trigger dangerous flows.
  2. Risk is highest in the first two years after a fire, but can persist longer depending on recovery.
  3. Sign up for your county's emergency alert system. The NWS issues Flash Flood Warnings specifically for burn scar areas when rain is expected.
  4. Have a plan to evacuate on short notice. Debris flows move faster than most people can run.
  5. For current burn scar flood risk assessments, contact your county flood control district or check with the Arizona Division of Emergency Management.
I'm renting or don't know my flood risk
  1. Check your flood zone on the FEMA Flood Map Service Center. Enter your address to see whether you are in a mapped flood hazard area.
  2. Ask your landlord whether the property has flood insurance. Standard renters insurance does not cover flood damage to your belongings.
  3. You can buy your own flood insurance policy through the National Flood Insurance Program or private insurers. There is typically a 30-day waiting period before coverage begins.
  4. Even outside a mapped flood zone, flooding can happen anywhere it rains. Low-lying areas near washes are particularly vulnerable in Arizona.

This is general guidance assembled from public sources, not legal, medical or engineering advice. When something here conflicts with what your county, emergency officials, or a licensed professional tells you about your specific situation, follow their instructions.

Emergency contacts and resources

Emergency

Life-threatening emergency
911
211 Arizona (shelter, assistance)
211 or 211arizona.org ↗
Arizona Division of Emergency Management
dema.az.gov ↗

Weather offices

NWS Phoenix
weather.gov/psr ↗
NWS Flagstaff
weather.gov/fgz ↗
NWS Tucson
weather.gov/twc ↗

County flood control

Maricopa County
Flood Control District ↗
Pima County
Regional Flood Control ↗
Yavapai County
Flood information ↗
Coconino County
Flood information ↗

Roads

Road closures and conditions
AZ511 ↗ or call 511

Power outages

APS
(855) 688-2437
SRP
(602) 236-4833
TEP (Tucson)
(520) 745-8000
UNS Electric
(877) 740-4401
EPCOR
(800) 383-7734

About this page: Flood alerts and stream gage readings are fetched live from the National Weather Service and USGS. Data may be delayed or incomplete. This is not a substitute for official emergency communications. Follow instructions from local emergency officials. In an emergency, call 911.