Grand Canyon Semesters (GCS) at Northern Arizona University are integrated learning experiences in the humanities and sciences. Students study the environmental and social challenges confronting us in the twenty-first century using an interdisciplinary approach to the curriculum. During previous semesters, participants have tackled complex issues such as how to balance environmental protection of Grand Canyon National Park while still meeting the needs of over five million visitors each year. Past GCS students have also, in an outdoor classroom experience, excavated and stabilized centuries-old cultural sites in the park while learning about the rights of indigenous peoples whose ancestors have lived in the Grand Canyon for thousands of years. This article describes a cultural mapping assignment, brand new to the author and her students, in which they examined and charted water's economic, political, artistic, ecological, social, and spiritual forces in both the classroom and field focusing specifically on the Greater Grand Canyon Region.