Clover and Jotter reached Lake Mead after ~45 days, completing the first successful passage by women through Grand Canyon and the first full botanical survey of the river corridor.
On August 6, 1938, after approximately 45 days and more than 650 miles of river travel, Elzada Clover and Lois Jotter arrived at Lake Mead, completing their historic journey through the Grand Canyon. Their arrival marked the successful conclusion of the first documented passage by women through the full length of the Colorado River within the Grand Canyon.
Beyond the exploratory achievement, the expedition yielded an unprecedented scientific product: the first comprehensive botanical survey of the plant life along the Grand Canyon's river corridor. Clover and Jotter had collected hundreds of specimens representing numerous species, many never before formally catalogued in that specific ecological context.
The journey had been fraught with peril—two members of the original expedition party drowned in a separate accident before the group entered the canyon, and the remaining crew faced capsizing boats, scorching heat, and the constant danger of the river's rapids. That two women succeeded where skeptics had predicted failure was itself a powerful statement in an era when women were widely considered unsuited to such rugged, physically demanding fieldwork.
Their achievement drew significant press attention at the time, framed often sensationally as a novelty, yet the enduring legacy was scientific: Clover and Jotter's work laid the essential groundwork for all future botanical study of the Grand Canyon ecosystem, and their journey remains a landmark in the history of river exploration.