San Francisco Habitat Stewards – Golden Gate National Parks Conservancy
Weekly drop-in coastal habitat restoration program at Fort Funston, Lands End, Baker Beach, and the Presidio of San Francisco. Volunteers remove invasive species, plant natives, and learn coastal ecology alongside Parks Conservancy staff; no experience necessary. Volunteers ages 15-17 need a signed parent/guardian approval form.
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Bay Net Volunteer Naturalist Program – Monterey Bay National Marine Sanctuary
Trained volunteer docents (age 16+) engage the public at Monterey-area shoreline sites about marine mammals, birds, kelp forests, oceanography, and sanctuary regulations. Involves a five-week spring training (Thursday seminars plus Saturday field sessions) followed by ongoing shoreline shifts.
Center for Land-Based Learning FARMS Leadership Program
A year-long program for Sacramento-region high schoolers combining field days on farms, ranches, and agricultural businesses with leadership training, mentoring, and a student-led community action project in sustainable agriculture.
San Bernardino County Museum Earth Sciences Volunteer Program
San Bernardino County Museum's Earth Sciences volunteer program lets students age 15 and up assist in the museum's active fossil prep lab, digitize and inventory the paleontology collection, and interact with visitors about fossils. It is a free, ongoing volunteer opportunity requiring at least 6 hours per month after a background check and orientation.
American Red Cross Bay Area/North Bay Red Cross Clubs
Student-led Red Cross Clubs at Northern California Coastal Region high schools, where teens ages 13-18 organize service projects, blood drives, and disaster-preparedness education for their campus and community, building leadership skills with minimal adult oversight.
East Bay Mineral & Lapidary Club Youth Membership
An East Bay (Oakland-area) nonprofit rock and mineral club offering a discounted youth membership for students 17 and under. Youth members get full access to lapidary workshops, cutting/polishing classes, field trips to geological sites, and the club's annual gem and mineral show, alongside an accompanying adult member.
Mountain Rain or Snow
NASA- and Desert Research Institute-backed citizen science project (started as Tahoe Rain or Snow) where volunteers text or use a web app during winter storms to report whether precipitation is rain, snow, or a mix, helping researchers improve mountain precipitation forecasting models used across the Sierra Nevada and other US mountain regions.