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EMERGENCY ALERT
USERY - Merkle and Vista Trails Temporarily Closed Feb 12 - Mar 5
SPUR CROSS - Invasive Species Treatment Feb 16 - Feb 19
WHITE TANK - Invasive Species Treatment - Feb 16 - 19
WHITE TANK - Invasive Species Treatment - January 26 - February 15
SPUR CROSS: Invasive Species Treatment - Jan 26 - Feb 8
ESTRELLA - Tamarisk Invasive Species Removal events Jan 5 thru 31 and Feb 28 thru March 31
MARICOPA TRAIL - Sun Valley Parkway Trailhead Improvement Project
 
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Events (70)
  • Jan
    14
    Clay Mine Hike and Tour (Registration Required, Limit 20 Participants)
    Jan 14, 2026 - (03:30 PM - 05:30 PM)
    Cave Creek Regional Park
    Join Ranger Kevin for a hike and mine tour which features a fascinating glimpse into Arizona’s past. Click program title for more details.
    Event Details
  • Jan
    14
    Stargazing (Registration Required, Limit 20 Participants) 
    Jan 14, 2026 - (06:00 PM - 07:30 PM)
    Cave Creek Regional Park
    Join Ranger Kevin for an evening of winter stargazing! Click program title for more details.
    Event Details
  • Jan
    14
    "San Tan After Dark" Mountain Bike Ride
    Jan 14, 2026 - (06:00 PM - 08:00 PM)
    San Tan Mountain Regional Park
    Event Details
  • Jan
    15
    Desert 101 Walk (Registration Required, Limit 20 Participants)
    Jan 15, 2026 - (08:00 AM - 09:30 AM)
    Usery Mountain Regional Park
    Learn about the plants and animals of our Sonoran Desert on an easy-paced walk with Ranger Olivia. Click program title for more details.
    Event Details
  • Jan
    15
    Estrella - Invasive Species Removal
    Jan 15, 2026 - (09:00 AM - 12:00 PM)
    Estrella Mountain Regional Park
    Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks.
    Event Details
  • Jan
    15
    White Tank - Invasive Species Removal
    Jan 15, 2026 - (09:00 AM - 12:00 PM)
    White Tank Mountain Regional Park
    Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks.
    Event Details
  • Jan
    15
    Homeschool Happenings: Nature Hike (Registration Required, Limit 35 Participants)
    Jan 15, 2026 - (10:30 AM - 12:00 PM)
    Usery Mountain Regional Park
    Join Ranger Olivia on a family-friendly hike to learn fun tidbits about our beautiful Sonoran Desert. Click program title for more details.
    Event Details
  • Jan
    15
    Desert Wildflower Hike (Registration Required, Limit 20 Participants)
    Jan 15, 2026 - (01:00 PM - 04:00 PM)
    Estrella Mountain Regional Park
    Learn about wildflowers and pollinators of the Sonoran Desert on this guided hike with Ranger Eric! Click on program title for more details.
    Event Details
  • Jan
    16
    Guided Bird Walk (Registration Required, Limit 10 Participants)
    Jan 16, 2026 - (08:00 AM - 09:30 AM)
    White Tank Mountain Regional Park
    Learn about the birds of the Sonoran Desert on this easy, short bird walk with Ranger Eric. Click on program title for more details.
    Event Details
  • Jan
    16
    Cactus Hike (Registration Required, Limit 20 Participants)
    Jan 16, 2026 - (08:30 AM - 12:00 PM)
    Lake Pleasant Regional Park
    Join Ranger Nikki on a hike to learn about a variety of cacti in our Sonoran Desert. Click program title for more details.
    Event Details
  • Jan
    16
    Ride with a Ranger! (Registration Required, Limit 8 Participants) 
    Jan 16, 2026 - (09:00 AM - 01:00 PM)
    McDowell Mountain Regional Park
    Join Ranger Kevin for a mountain bike trail ride out to view the Marcus Landslide, Mushroom Rock and Knob Rock formations up close.  Click program title for more details. 
    Event Details
  • Jan
    16
    Desert Wildflower Hike (Registration Required, Limit 20 Participants)
    Jan 16, 2026 - (10:00 AM - 12:00 PM)
    White Tank Mountain Regional Park
    Learn about wildflowers and pollinators of the Sonoran Desert on this guided hike with Ranger Eric! Click on program title for more details.
    Event Details
  • Jan
    16
    Discovery Station: Explore your Maricopa County Parks Trails!
    Jan 16, 2026 - (12:30 PM - 02:30 PM)
    White Tank Mountain Regional Park
    Learn about what each of the Maricopa County Parks have to offer at this table display with Ranger Eric. Click on program title for more details.
    Event Details
  • Jan
    17
    Desert Wildflower Hike (Registration Required, Limit 20 Participants)
    Jan 17, 2026 - (08:00 AM - 01:00 PM)
    San Tan Mountain Regional Park
    Learn about wildflowers, other plants, and pollinators of the Sonoran Desert on this guided hike with Ranger Eric! Click on program title for more details.
    Event Details
  • Jan
    17
    Nature Walk (Registration Required, Limit 20 participants)
    Jan 17, 2026 - (08:30 AM - 11:00 AM)
    Hassayampa River Preserve
    Join Ranger Nikki on an easy to moderate walk to explore riparian and desert trails at the preserve. Click program title for more details.
    Event Details
  • Jan
    17
    MTB Shift into the Weekend
    Jan 17, 2026 - (09:00 AM - 11:00 AM)
    San Tan Mountain Regional Park
    Event Details
  • Jan
    17
    Estrella - Invasive Species Removal
    Jan 17, 2026 - (09:00 AM - 12:00 PM)
    Estrella Mountain Regional Park
    Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks.
    Event Details
  • Jan
    17
    White Tank - Invasive Species Removal
    Jan 17, 2026 - (09:00 AM - 12:00 PM)
    White Tank Mountain Regional Park
    Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks.
    Event Details
  • Jan
    18
    Guided Bird Walk (Registration Required, Limit 10 Participants)
    Jan 18, 2026 - (08:15 AM - 11:15 AM)
    Hassayampa River Preserve
    Learn about the resident and migrant birds of desert riparian areas on this guided walk with Ranger Eric. Click on program title for more details.
    Event Details
  • Jan
    18
    Discovery Station: Desert Palms
    Jan 18, 2026 - (12:00 PM - 02:00 PM)
    Hassayampa River Preserve
    Have you ever wondered about the Preserve's historic stand of palm trees? Then join Ranger Eric to learn about them inside the Visitor Center. Click on program title for more details.
    Event Details
  • Jan
    19
    Lake Pleasant - Monday Clean-Up Crew
    Jan 19, 2026 - (07:00 AM - 09:00 AM)
    Lake Pleasant Regional Park
    Event Details
  • Jan
    19
    Spur Cross - Invasive Species Removal
    Jan 19, 2026 - (09:00 AM - 12:00 PM)
    Spur Cross Ranch Conservation Area
    Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks.
    Event Details
  • Jan
    19
    White Tank - Invasive Species Removal
    Jan 19, 2026 - (09:00 AM - 12:00 PM)
    White Tank Mountain Regional Park
    Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks.
    Event Details
  • Jan
    19
    MLK Day of Service - Lake Pleasant
    Jan 19, 2026 - (09:00 AM - 12:00 PM)
    Lake Pleasant Regional Park
    Event Details
  • Jan
    20
    Bird Meet Up
    Jan 20, 2026 - (08:30 AM - 09:30 AM)
    Usery Mountain Regional Park
    Birding on the back patio with park volunteers Jim and Judy, No Registration Required
    Event Details
  • Jan
    21
    "San Tan After Dark" Mountain Bike Ride
    Jan 21, 2026 - (06:00 PM - 08:00 PM)
    San Tan Mountain Regional Park
    Event Details
  • Jan
    22
    Guided Bird Walk (Registration Required, Limit 10 Participants)
    Jan 22, 2026 - (08:00 AM - 10:00 AM)
    Lake Pleasant Regional Park
    Look for desert and migratory birds around the lake with Ranger Eric! Click on program title for details.
    Event Details
  • Jan
    22
    White Tank - Invasive Species Removal
    Jan 22, 2026 - (09:00 AM - 12:00 PM)
    White Tank Mountain Regional Park
    Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks.
    Event Details
  • Jan
    22
    Discovery Station: Explore your Maricopa County Parks Trails!
    Jan 22, 2026 - (10:30 AM - 12:00 PM)
    Lake Pleasant Regional Park
    Learn about what each of the Maricopa County Parks have to offer at this table display with Ranger Eric. Click on program title for more details.
    Event Details
  • Jan
    22
    Connecting with Nature Class (No Registration Required)
    Jan 22, 2026 - (03:30 PM - 05:00 PM)
    Spur Cross Ranch Conservation Area
    Did you make it your New Year’s Resolution to spend more time in nature? Join Ranger Kevin for an introduction to the skills needed to enhance your connection with the natural world. Click program title for more details.
    Event Details
  • Jan
    22
    Saguaros in Sunset (Registration Required, Limit 20 Participants)
    Jan 22, 2026 - (04:30 PM - 06:00 PM)
    Usery Mountain Regional Park
    Join Ranger Olivia for a hike to see and learn about the stunning saguaros during
    sunset. Click program title for more details.
    Event Details
  • Jan
    22
    Stargazing (Registration Required, Limit 20 Participants)
    Jan 22, 2026 - (05:30 PM - 07:30 PM)
    Spur Cross Ranch Conservation Area
    Join Ranger Kevin for an evening of winter stargazing! Click program title for more details.
    Event Details
  • Jan
    23
    Hassayampa - Invasive Species Removal
    Jan 23, 2026 - (08:30 AM - 12:00 PM)
    Hassayampa River Preserve
    Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks.
    Event Details
  • Jan
    23
    Spur Cross - Invasive Species Removal
    Jan 23, 2026 - (09:00 AM - 12:00 PM)
    Spur Cross Ranch Conservation Area
    Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks.
    Event Details
  • Jan
    23
    Estrella - Invasive Species Removal
    Jan 23, 2026 - (09:00 AM - 12:00 PM)
    Estrella Mountain Regional Park
    Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks.
    Event Details
  • Jan
    23
    San Tan - Invasive Species Removal
    Jan 23, 2026 - (09:00 AM - 12:00 PM)
    San Tan Mountain Regional Park
    Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks.
    Event Details
  • Jan
    23
    Saguaro Hike (Registration required, limit 20)
    Jan 23, 2026 - (03:30 PM - 06:00 PM)
    San Tan Mountain Regional Park
    Join Ranger Jacque for a 5 mile trek featuring a rare crested saguaro! Click program title for more details.
    Event Details
  • Jan
    23
    Desert 101 Hike
    Jan 23, 2026 - (05:30 PM - 07:30 PM)
    McDowell Mountain Regional Park
    Spend the evening hiking through pristine desert under a blanket of stars with Ranger Derik.
    Click program title for more details.
    Event Details
  • Jan
    24
    Bird Walk with Tom Locascio (Registration Required, Limit 12 Participants)
    Jan 24, 2026 - (07:30 AM - 11:00 AM)
    White Tank Mountain Regional Park
    Join Park Volunteer Tom Locascio for a morning walk followed by an informational program in the Nature Center about the birds of White Tank Mountain Regional Park!
    Event Details
  • Jan
    24
    Guided Bird Walk (Registration Required, Limit 10 Participants)
    Jan 24, 2026 - (08:15 AM - 11:15 AM)
    Hassayampa River Preserve
    Learn about the resident and migrant birds of desert riparian areas on this guided walk with Ranger Eric. Click on program title for more details.
    Event Details
  • Jan
    24
    Plant Hike (Registration Required, Limit 15 Participants)
    Jan 24, 2026 - (09:00 AM - 10:30 AM)
    Usery Mountain Regional Park
    Learn all about plants of the Sonoran Desert during this guided hike with Ranger Olivia. Click program title for more details.
    Event Details
  • Jan
    24
    McDowell - Invasive Species Removal
    CANCELLED
    Jan 24, 2026 - (09:00 AM - 12:00 PM)
    McDowell Mountain Regional Park
    Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks.
    Event Details
  • Jan
    24
    White Tank - Invasive Species Removal
    Jan 24, 2026 - (09:00 AM - 12:00 PM)
    White Tank Mountain Regional Park
    Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks.
    Event Details
  • Jan
    24
    Discovery Station: Ecology
    Jan 24, 2026 - (10:00 AM - 12:00 PM)
    Estrella Mountain Regional Park
    Join Ranger Shaun as we move along through the winter season towards Spring. The emergence of wildflowers will bring back an explosion of insects close behind! Click program title for more details.
    Event Details
  • Jan
    24
    Discovery Station: Wildflowers
    Jan 24, 2026 - (11:00 AM - 02:00 PM)
    Usery Mountain Regional Park
    Join Ranger Olivia to see and learn about the different types of wildflowers that we might be seeing this upcoming wildflower season. Click on program title for more details.
    Event Details
  • Jan
    24
    Ecosystem Hike (Registration Required, Limit 15 Participants)
    Jan 24, 2026 - (01:00 PM - 04:00 PM)
    Estrella Mountain Regional Park
    Join Ranger Shaun for a midday desert jaunt! Come see the beauty of the desert on a Ranger guided hike! Click program title for more details.
    Event Details
  • Jan
    24
    Creatures of the Night Walk--Full Moon (Registration Required, Limit 10 Participants)
    Jan 24, 2026 - (06:00 PM - 08:00 PM)
    Hassayampa River Preserve
    Join Ranger Eric for an after-hours prowl of the Preserve trails to look for nocturnal animals and scorpions! Click on program title for more details.
    Event Details
  • Jan
    25
    Desert 101 Hike (Registration Required, Limit 20 Participants)
    Jan 25, 2026 - (10:00 AM - 12:00 PM)
    Cave Creek Regional Park
    Get an introduction to the plants, animals and history of our beautiful Sonoran Desert on this hike with Ranger Nikki. Click program title for more details.
    Event Details
  • Jan
    25
    Bird ID Basics (Registration Required, Limit 25 Participants)
    Jan 25, 2026 - (01:00 PM - 02:00 PM)
    Cave Creek Regional Park
    Learn about ways to identify birds that you see in your backyard and along hiking trails with an indoor presentation from Ranger Nikki. Click program title for more details.
    Event Details
  • Jan
    26
    Lake Pleasant - Monday Clean-Up Crew
    Jan 26, 2026 - (07:00 AM - 09:00 AM)
    Lake Pleasant Regional Park
    Event Details
  • Jan
    28
    Guided Bird Walk (Registration Required, Limit 10 Participants)
    Jan 28, 2026 - (08:15 AM - 11:15 AM)
    Hassayampa River Preserve
    Learn about the resident and migrant birds of desert riparian areas on this guided walk with Ranger Eric. Click on program title for more details.
    Event Details
  • Jan
    28
    "San Tan After Dark" Mountain Bike Ride
    Jan 28, 2026 - (06:00 PM - 08:00 PM)
    San Tan Mountain Regional Park
    Event Details
  • Jan
    29
    Desert 101 Hike (Registration Required, Limit 20 Participants)
    Jan 29, 2026 - (08:00 AM - 11:00 AM)
    Cave Creek Regional Park
    Learn all about the Sonoran Desert ecosystem on this guided walk with Ranger Eric! Click on program title for more details.
    Event Details
  • Jan
    29
    Fitness Hike (Registration Required, Limit 20 Participants)
    Jan 29, 2026 - (09:30 AM - 11:30 AM)
    White Tank Mountain Regional Park
    Join Ranger Jacque for a fun hike to enjoy the trails and mountain views.
    Click program title for more details.
    Event Details
  • Jan
    29
    Discovery Station: Ecology
    Jan 29, 2026 - (10:00 AM - 12:00 PM)
    Usery Mountain Regional Park
    Join Ranger Shaun as we move along through the winter season towards Spring. The emergence of wildflowers will bring back an explosion of insects close behind! Click program title for more details.
    Event Details
  • Jan
    29
    Discovery Station: Explore your Maricopa County Parks Trails!
    Jan 29, 2026 - (12:00 PM - 02:00 PM)
    Cave Creek Regional Park
    Learn about what each of the Maricopa County Parks have to offer at this table display with Ranger Eric. Click on program title for more details.
    Event Details
  • Jan
    29
    Ecosystem Hike (Registration Required, Limit 15 Participants)
    Jan 29, 2026 - (01:00 PM - 03:00 PM)
    Usery Mountain Regional Park
    Join Ranger Shaun for a midday desert jaunt! Come see the beauty of the desert on a Ranger guided hike! Click program title for more details.
    Event Details
  • Jan
    30
    Guided Bird Hike (Registration Required, Limit 10 Participants)
    Jan 30, 2026 - (08:00 AM - 11:00 AM)
    Spur Cross Ranch Conservation Area
    Learn all about the resident and migratory birds of the Sonoran Desert during this guided hike with Ranger Eric. Click on program title for more details.
    Event Details
  • Jan
    30
    Morning Meander (Registration Required, Limit 10 Participants)
    Jan 30, 2026 - (08:00 AM - 10:00 AM)
    Hassayampa River Preserve
    Come wander the park trails with Ranger Shaun. Click program title for more
    details.
    Event Details
  • Jan
    30
    Fitness Hike (Registration Required, Limit 15 Participants)
    Jan 30, 2026 - (09:00 AM - 01:00 PM)
    Estrella Mountain Regional Park
    Join Ranger Jacque for an invigorating hike featuring panoramic mountain views. Click program title for more details.
    Event Details
  • Jan
    30
    Estrella - Invasive Species Removal
    Jan 30, 2026 - (09:00 AM - 12:00 PM)
    Estrella Mountain Regional Park
    Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks.
    Event Details
  • Jan
    30
    White Tank - Invasive Species Removal
    Jan 30, 2026 - (09:00 AM - 12:00 PM)
    White Tank Mountain Regional Park
    Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks.
    Event Details
  • Jan
    30
    Discovery Station: Aquatic Life
    Jan 30, 2026 - (11:00 AM - 01:00 PM)
    Hassayampa River Preserve
    Join Ranger Shaun for some microscope empowered bug hunting! Let’s see what
    sort of aquatic critters we can find in the pond! Click program title for more details.
    Event Details
  • Jan
    30
    Guided Plant Hike (Registration Required, Limit 20 Participants)
    Jan 30, 2026 - (11:30 AM - 02:00 PM)
    Spur Cross Ranch Conservation Area
    Learn all about plants of the Sonoran Desert during this guided hike with Ranger Eric. Click on program title for more details.
    Event Details
  • Jan
    31
    Guided Bird Hike (Registration Required, Limit 10 Participants)
    Jan 31, 2026 - (08:00 AM - 10:00 AM)
    McDowell Mountain Regional Park
    Learn about the resident and migrant birds of the Sonoran Desert on this guided walk with Ranger Eric. Click on program title for more details.
    Event Details
  • Jan
    31
    Estrella - Invasive Species Removal
    Jan 31, 2026 - (09:00 AM - 12:00 PM)
    Estrella Mountain Regional Park
    Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks.
    Event Details
  • Jan
    31
    Discovery Station: Ecology
    Jan 31, 2026 - (10:00 AM - 12:00 PM)
    Lake Pleasant Regional Park
    Join Ranger Shaun as we move along through the winter season towards Spring. The emergence of wildflowers will bring back an explosion of insects close behind! Click program title for more details.
    Event Details
  • Jan
    31
    Introduction to Archery (Registration required, Limit 10 Participants))
    Jan 31, 2026 - (10:00 AM - 12:30 PM)
    Estrella Mountain Regional Park
    Join Ranger Nikki and Park Staff to learn the fundamentals of Target Archery in a safe and fun outdoor environment. Click program title for more details.
    Event Details
  • Jan
    31
    Desert Wildflower Hike (Registration Required, Limit 20 Participants)
    Jan 31, 2026 - (10:30 AM - 01:30 PM)
    McDowell Mountain Regional Park
    Learn about and look for Sonoran Desert wildflowers with Ranger Eric. Click on program title for more details.
    Event Details
  • Jan
    31
    Ecosystem Hike (Registration Required, Limit 15 Participants)
    Jan 31, 2026 - (01:00 PM - 03:00 PM)
    Lake Pleasant Regional Park
    Join Ranger Shaun for a midday desert jaunt! Come see the beauty of the desert on a Ranger guided hike! Click program title for more details.
    Event Details
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