river rafting

within 25 miles

Aug 25, 2026

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Prescott College

Returning Rapids Western Grand Canyon

To monitor and understand the returning rapids of the Western Grand Canyon’s Colorado River.

Anywhere

Ongoing

Citizen Sciencehydrologydroughtmonitoringriverlava cliffcolorado riverwater qualitygrand canyonreturning rapidsrapidsclimate changeriver raftingwestern grand canyonlake mead

San Diego River Park Foundation

River Assessment Field Team

Keep the San Diego River trash-free

Multiple locations, including yours!

Ongoing

Citizen ScienceNature & OutdoorsBiologyGeographyEcology & EnvironmentOcean Water Marinetrashdata collectionmappsan diego riverriversorientationhikingmaplocationhikesappssurveysan diegomapplerhomelessnesshikeriver clean-upfield surveymapping

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