Volunteers paddling canoes and kayaks through gentle rapids on the San Joaquin River under a blue spring sky
San Joaquin River · Fresno & Madera Counties

Together we clean, restore & protect our rivers.

River Tree Volunteers sponsors river cleanups, canoe trips, hikes, and habitat restoration along the San Joaquin — powered entirely by neighbors like you.

8,444tires pulled from the river
32 tonsof trash hauled out yearly
75 milesof river trail in progress
Our impact

The river gives. We give back.

Every number below was carried out of the river bottom by hand — one tire, one trash bag, one Saturday morning at a time.

8,444Tires removed from the San Joaquin River — and counting
150+Tires pulled out in an average year
32Tons of trash removed yearly, much of it from abandoned encampments
75Miles of the San Joaquin River Trail, Lake Millerton to Reds Meadow
What we do

Six ways we care for the river

From hauling tires out of the water to building the trail that will one day run from the valley floor to the high Sierra.

A large crew of volunteers in bright shirts gathered on the riverbank after a cleanup

River & Property Cleanups

Hands-on cleanups of the river channel and surrounding public lands — the heart of what we do.

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Canoes and kayaks gliding across calm green water beneath oak-covered hills

Canoe Trips & Hikes

Guided paddles and hikes that connect Central Valley families with their river.

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Volunteers launching canoes from a green riverbank in early spring

Habitat Restoration

We initiated — and still maintain — several native habitat restoration projects along the river.

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Aerial view of the San Joaquin River winding past green banks and gravel trails

Trail Building

Helping construct the 75-mile San Joaquin River Trail and the Small Fry Trail at Friant Fish Hatchery.

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Two volunteers in gloves carrying a trash bin up a sandy river-bottom trail

Adopt-A-Park

Through Fresno City's Adopt-A-Park program, we help maintain the River Bottom Park Trail.

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A dumpster filled with debris cleared from an abandoned riverside camp

Weed & Graffiti Removal

Targeted invasive weed removal and graffiti cleanup that keep public spaces welcoming.

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Volunteers gathered beside a canoe trailer at Lake Millerton before a paddle
Featured project

A trail from the valley to the high Sierra

We're part of the effort to build the San Joaquin River Trail — 75 miles from Lake Millerton to Reds Meadow. When complete, it will link Central Valley neighborhoods to some of the most beautiful country in California.

  • Trail construction alongside agency partners
  • Built the Small Fry Trail at Friant Fish Hatchery
  • Ongoing maintenance of the River Bottom Park Trail
See the trail work
Why it matters

8,444 tires didn't leave the river on their own.

Each one was found, dug out, floated to shore, and hauled up the bank by a volunteer. We still pull roughly 150 tires and 32 tons of trash out of the San Joaquin every year — most of it now from abandoned encampments.

More hands mean cleaner water, safer parks, and a river the whole Valley can be proud of.

Volunteers and a park ranger beside a dumpster loaded with debris cleared from the river bottom
Get involved

Ready to get your boots muddy?

No experience needed — just show up. Cleanups, paddles, and trail days are family-friendly and open to everyone in the Central Valley.