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Sierra Mac River Trips

Tuolumne's First Outfitter

Contact Us BOOK NOW 209.591.8027

Preserving Rivers

Preserving rivers for future generations
North Fork American River
Sierra Mac's history of leadership in preserving rivers.
Friends of the River, Tuolumne River Preservation Trust, American Rivers
Wild and Scenic Tuolumne River
Working to Protect the Stanislaus River in the 1970's

We feel privileged to be able to experience and share the rivers of Yosemite. Since our inception Sierra Mac has been a leader in the effort to preserve and protect this precious finite resource. We were active in the fight to save the Stanislaus River which was eventually buried under New Melones Reservoir. That struggle led to the formation of Friends of the River and success in 1980’s when both the Tuolumne and Merced Rivers were granted Federal Wild & Scenic status.

The National Wild and Scenic Rivers Act recognizes certain rivers that have “outstandingly remarkable scenic, recreational, geologic, fish and wildlife, historic, cultural or other similar values,” and it requires that Congress preserve them in their ”free-flowing condition.” As charter founding members of both Friends of the River and The Tuolumne River Trust we remain committed to the fight to preserve our last remaining wild rivers. Learn more by exploring the links below.

Tuolumne River Trust

Tuolumne River Trust

The Tuolumne River Trust promotes stewardship of the Tuolumne River through education, collaboration, community outreach, on the ground restoration projects, advocacy and grassroots organizing to demonstrate public support for their work. More…

CSERC-Central Sierra Environmental Resource Center

CSERC

Since 1991 the Central Sierra Environmental Resource Center (CSERC) has worked to protect many aspects of the environment in the Central Sierra and Northern Yosemite region, from wildlife and plants, to rivers and wild places. More…

Friends of the River

Friends of the River

Founded in 1973 during the fight to save the Stanislaus River from New Melones Dam, Friends of the River is a grassroots organization working to protect and restore California rivers by influencing public policy and inspiring citizen action.  More…

American Rivers

American Rivers

Founded in 1973 in Denver Colorado by a concerned group of river runners and conservationists, American Rivers has been successful in the fight to preserve our Nation’s last free-flowing rivers and advocating for river restoration.  More…

River Preservation

The Sierra Club

Founded by legendary conservationist John Muir in 1892, the Sierra Club is now the largest and most influential grassroots environmental organization in the United States — with more than two million members and supporters. More…

Why Choose
Sierra Mac?

Why Us
Our History
Experienced Guides
Closest To Yosemite
Rave Reviews
Preserving Rivers

Rafting Trips

Cherry Creek / Upper T
Main Tuolumne
Combination Trip
Merced River
Yosemite Float Trip
Trip Comparison

Book Now - Rates & Dates
Rafting Gift Cards

Yosemite Rafting Blog

Planning your Visit to Yosemite

In 1912, John Muir wrote, “No temple made with … Read more

Yosemite Rafting Video Highlights

Summer 2022 is fast approaching. Merced rafting … Read more

Yosemite Rafting Outlook

Sierra Mac - Record December, Record January. … Read more

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SIERRA MAC RIVER TRIPS

Rafting the Rivers of Yosemite
Marty & Tom McDonnell – Outfitter
Cell and Text Phone – 209.591.8027
International Calls – 001.209.591.8027
Email – contactus@sierramac.com
P.O. Box 264 – Groveland, CA 95321
27890 CA HWY 120, Colfax Spring
13.5mi East of Groveland, CA

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