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  • Maricopa County Parks and Recreation: Cave Creek – Invasive Species Removal

    Cave Creek Regional Park 37900 E. Cave Creek Pkwy., Cave Creek, AZ, United States

    Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks. Update 04-10-2026 - “This event is changing to a native...

    Free with Park Fee
  • Maricopa County Parks and Recreation: City Nature Challenge Hike

    San Tan Mountain Regional Park 6533 W. Phillips Rd., Queen Creek, AZ, United States

    Help document biodiversity of a scenic, under-visited part of the park while participating in the City Nature Challenge with Ranger Eric! The option to do a short vs. a longer...

    Free with Park Fee
  • Maricopa County Parks and Recreation: City Nature Challenge Hike

    Usery Mountain Regional Park 3939 N. Usery Pass Rd., Mesa, AZ, United States

    Join Ranger Jacque on a brief hike and use your phone to document biodiversity in the park for the City Nature Challenge global Citizen Science competition. Citizen Science Month 2026...

    Free with Park Fee
  • Maricopa County Parks and Recreation: City Nature Challenge Hike

    Spur Cross Ranch Conservation Area 44000 N. Spur Cross Rd., Cave Creek, AZ, United States

    Join Ranger Nikki on a moderate hike and use your phone to document biodiversity in the park for the City Nature Challenge global Citizen Science competition that runs April 24-27. ...

    Free with Park Fee
  • Maricopa County Parks and Recreation: Lake Pleasant – Earth Day Clean-Up

    Lake Pleasant Regional Park 41835 N. Castle Hot Springs Rd., Morristown, AZ, United States

    Date - Saturday, April 25, 2026, EARTH DAY LITTER PICK UP EVENT Time – 8:00 am -11:00 am Location – Lake Pleasant Regional Park, Main Entry.  Directions:  From central Phoenix,...

    Free with Park Fee