All Outdoor California Whitewater Rafting is an Armstrong family-owned company that has provided quality rafting trips to individuals, families, groups of friends and business associates since 1961. A staff of over 175 highly trained guides offer 1, 2, 3 and 4-day rafting trip options for beginning, intermediate and advanced rafters. All Outdoor is one of the largest and most experienced rafting companies in California and offers trips on ten California rivers, including the popular American River, Upper Klamath, North Fork Stanislaus and Tuolumne.