Moderate Risk Arizona  ·  Extreme Heat / Flash Flooding

Pima County AZ

EMERGENCY PREPAREDNESS & DISASTER RISK PROFILE  ·  LAST UPDATED: Mar 2026

6/ 10
Threat Score
Population
1,043,433
Area
9189
sq miles
Primary Hazard
Extreme Heat / Flash Flooding
FEMA Disasters
30
federally declared

Pima County and Tucson sit in the Sonoran Desert facing extreme summer heat and violent monsoon flash flooding. The Santa Cruz River and numerous washes can transform from dry sand to raging torrents within minutes during monsoon storms. Wildfire risk in the Santa Catalina and Rincon Mountains threatens suburban communities at the urban-wildland interface.

// Preparedness Recommendations

  • Evacuation routes inland should be identified in advance.
  • Store at least 72 hours of food and water.
  • Elevate critical belongings above flood level.
  • Have backup power ready in case of grid failure.

// Recommended Supplies

Essential gear for power outages, severe weather, and emergency situations in your area.

// Risk Intelligence

Threat Score 6 / 10    Moderate Risk
Primary Hazard Extreme Heat / Flash Flooding
Secondary Hazard Wildfire
FEMA Flood Zone Zone X (Moderate Risk)
Federally Declared Disasters 30
Last Major Event Flash Flood (August 2022)
Event Frequency Major event every 4–6 years

// Emergency Operations

Emergency Mgmt Phone (520) 547-6800
Emergency Shelters 24 designated facilities
Evacuation Routes I-10 East, I-19 South, AZ-77 North, AZ-86 West

// County Profile

County Pima County AZ
State Arizona (AZ)
Population 1,043,433
Area 9189 sq miles
FEMA Region Zone X (Moderate Risk)

// Major Cities

Lukeville AZ Oro Valley AZ Tucson AZ

// Cities in This County

// Other Arizona Counties

// Nearby Infrastructure Risks

Critical infrastructure facilities within or near this area that could affect civilian safety during emergencies, conflict, or infrastructure failures.

RTX Raytheon Missiles and Defense Tucson AZ
Military Installation  ·  Tucson, AZ  ·  RTX Raytheon  ·  5-mi risk zone
9/10 High
💧
Central Arizona Project Canal AZ
Water Treatment  ·  Phoenix, AZ  ·  Central Arizona Project / Bureau of Reclamation  ·  10-mi risk zone
9/10 Critical
Raytheon Missile Systems Tucson AZ
Military Installation  ·  Tucson, AZ  ·  Raytheon Technologies / RTX  ·  5-mi risk zone
8/10 High
Davis-Monthan Air Force Base AZ
Military Installation  ·  Tucson, AZ  ·  US Air Force  ·  25-mi risk zone
7/10 High
💧
Tucson Water Department AZ
Water Treatment  ·  Tucson, AZ  ·  Tucson Water Department  ·  5-mi risk zone
7/10 High
💧
Tucson Metropolitan Water District AZ
Water Treatment  ·  Tucson, AZ  ·  Metropolitan Domestic Water Improvement District  ·  5-mi risk zone
7/10 High
🏟
Arizona Stadium Tucson AZ
Stadium / Arena  ·  Tucson, AZ  ·  Arizona Wildcats / NCAA  ·  2-mi risk zone
6/10 Moderate

Infrastructure risk data is for emergency preparedness awareness. Facility locations are publicly known. Always follow official emergency guidance.