Ken Sleight

Ken Sleight died on Friday, October 2, 2026, in Moab, Utah, at the age of 97. Spanish Valley Mortuary in Moab confirmed his death. No cause of death was made public in the days immediately after his passing. He had lived at Pack Creek Ranch near Moab for the last four decades. Jane Sleight, his wife of more than forty years and co-founder of the ranch, had died on February 24, 2026, at age 82. Funeral and memorial arrangements were coordinated through Spanish Valley Mortuary in Moab.

Kenneth Sleight was born on August 16, 1929, in Paris, Idaho, in Bear Lake County. He and his five siblings grew up on farms in Idaho and northern Utah, spending time around general stores run by their father and uncles. He attended the University of Utah, where in 1951 he took his first river trip through the Gates of Lodore on the Green River. From June 1952 to September 1953 he served in the Korean War with the U.S. Army 48th Field Artillery Battalion of the 7th Infantry Division. After the war he worked as a Firestone tire salesman and briefly as a teacher in Salt Lake City before turning fully to river outfitting.

In 1957 Sleight purchased surplus Army rafts and quit the tire business to open the river guiding company that became Ken Sleight Expeditions. For the next several years he led trips through Glen Canyon on the Colorado River, showing artists, reporters, and the public the sandstone country that would soon be flooded by Lake Powell after Glen Canyon Dam's gates closed in 1963. He also ran Cataract Canyon, the Grand Canyon, and the San Juan, Green, and Yampa rivers, and guided on rivers in Alaska, Mexico, and Central America. In 1967 at Lees Ferry he met Edward Abbey, then a National Park Service ranger. Their friendship and shared talk of undoing the dam fed Abbey's 1975 novel The Monkey Wrench Gang, in which Sleight inspired the character Seldom Seen Smith. Sleight later opposed uranium mining, BLM forest chaining, and nuclear waste proposals near Canyonlands, wrote columns for the Canyon Country Zephyr, chaired the San Juan County Democrats, and mentored activists including Tim DeChristopher. He was inducted into the John Wesley Powell River History Museum Hall of Fame in 2012.

Sleight had children from his first marriage, including sons Mark, Jeff, and Steve. Mark later held a Grand Canyon river permit beginning in 1979. In 1983 Sleight married Jane Hunter. From the mid-1980s the couple made Pack Creek Ranch, south of Moab at the base of the La Sal Mountains, their home and a country inn for river runners, writers, and activists. They ran backcountry outfitting and guide service there into the early 1990s. Jane Sleight died in February 2026 at age 82, after more than forty years of marriage. In 2021 the Pack Creek Fire destroyed Sleight's office and extensive historical archives on the ranch property.

Sleight is remembered as the real-life model for Seldom Seen Smith in Abbey's The Monkey Wrench Gang and as one of the last living links to the river world Abbey chronicled. Tributes from Utah conservationists, river guides, and writers after his death cast him as a rancher, river runner, and agitator who never stopped arguing that Glen Canyon Dam should come down and the Colorado River should run free. Pack Creek Ranch, his Hall of Fame induction, and decades of organizing against dams, uranium mills, and forest clearing on the Colorado Plateau form the public record of a life spent defending red rock country. He left behind children and a Moab community that knew him as Seldom Seen in more than name.