Sierra Mac River Trips

Since 1965, Sierra Mac River Rafting Trips have dedicated ourselves to providing exceptionally fine whitewater river trips.  We operate exclusively on California’s extraordinary Tuolumne River, one of the few rivers in the state bestowed with “Wild and Scenic” status by the US Congress for its outstanding whitewater and superb scenery.

The Tuolumne’s classic class IV run from Meral’s Pool to Ward’s Ferry is excellent for first time boaters and veteran river runners alike.  The Cherry Creek/Upper Tuolumne is for serious boaters looking for the ultimate challenge.

Expert guides, state of the art self-bailing rafts, plentiful and delicious meals, and meticulous, behind-the-scenes planning is our hallmark.

For the Tuolumne River, you won’t find a crew with more years on the water and better credentials than Sierra Mac.

My great love for rivers and whitewater navigation began at an early age and spans over 45 years.  In my teen years I built and sold kayaks out of my parents’ basement and guided for the first commercial rafting company in California. In 1969, I led the inaugural professional rafting trip down the Main Tuolumne, a run that quickly became the classic Class IV river experience in California. In 1972, I designed the first self-bailing cataraft and used it to pioneer the Cherry Creek/Upper Tuolumne run, recognized as the most challenging commercially-run whitewater in the U.S.

Off the river, I have been a passionate advocate for river conservation and environmental causes my whole life.  As one of the charter members of the board of the Tuolumne River Trust (, we led the successful campaign to stop numerous destructive dam projects on the Tuolumne and its tributaries, preserving this rare piece of Sierran wilderness for generations to come.  After 38 years, I still immensely enjoy rafting the “T”.  I personally oversee general operations and each reservation to ensure a seamless vacation experience.

It is a privilege to host first-time boaters and veterans alike on our favorite river canyon.  Nothing takes you farther away from your routines than a splash of white water and the tranquility of a wilderness river canyon.  We look forward to sharing our love for this place and the magic of whitewater with you.