In Arizona

• National Weather Service for:
  • Flagstaff, AZ
  • Phoenix, AZ
  • Sierra Vista, AZ
  • Tucson, AZ

• Other services in AZ:
  • Pima County Flood Control District
  • UA's Atmospheric Sciences Weather Products
  • USGS Surface-Water Data for Arizona
  • Arizona Climate Summaries

Other Rain Tracking Citizen-based Efforts

• Community Collaborative Rain, Hail & Snow Network (CoCoRaHS)
• U.S. Drought Monitor