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Arizona State Parks & Trails
Arizona State Parks & Trails: Tsüvó Trail and Diné Point at Homolovi
Homolovi State Park Arizona
- April 18, 2026 at 7:00 AM
CommunityGeneral Science
river rangers
within 25 miles
Apr 4, 2026
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Maricopa County Parks and Recreation
Maricopa County Parks and Recreation: City Nature Challenge Practice Hike
Hassayampa River Preserve Arizona
- April 16, 2026 at 7:00 AM
CommunityGeneral Science
Maricopa County Parks and Recreation
Maricopa County Parks and Recreation: Guided Bird Hike (City Nature Challenge)
Estrella Mountain Regional Park Arizona
- April 24, 2026 at 7:00 AM
CommunityGeneral Science
Tangaroa Blue Foundation
Tangaroa Blue Foundation
Reduce the occurrence of marine debris in our oceans
Anywhere
- Ongoing
Citizen ScienceOcean Water MarineEducationEcology & EnvironmentNature & Outdoorsbeach clean-upriver clean-uptangaroa bluemarine debris
Texas Stream Team
Texas Stream Team
Understand and Protect the 191,000 miles of Texas Waterways
Multiple locations, including yours!
- Ongoing
Citizen ScienceClimate & WeatherNature & OutdoorsOcean Water MarineEcology & EnvironmentInsects & PollinatorsBiologyChemistryGeographytestingkayakcanoecitizen scientistwater quality testinge.colicoast-lineriveron-site testingmonthly samplingdivingmono-filamentcitizen-based monitoringstream flowphenvironmental monitoringfishinglakethe meadows center for water and the environmentmonitoringturbiditydata collectiontrainingsenvironmentalsan marcosstreamtexas stream teamwater quality monitormaster naturalistsconductivitywater quality monitoringmonofilamentstream teamriparianmonthly monitoringwatercitizen scienceaquatic allianceclean rivers programmacroinvertebratessalinitypaddlingdissolved oxygenriver rangerstraining
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