Tillie Walton, Conservationist, Consultant, and Philanthropist; Aspen, Colorado. Walton has created and implemented large river restoration projects and environmental conservation efforts, including the Yuma East Wetlands. Her love of rivers was inspired by over 20 years of guiding whitewater expeditions through the Grand Canyon and on other rivers across the planet. Walton served on the board of the Walton Family Foundation and on advisory boards including the World Wildlife Fund (WWF), Aspen Center for Environmental Studies, Aspen Institute’s Vanguard Chapter, and Grand Canyon Youth.