2017 Map of Touchet

About this map

The Touchet River flows southward through a landscape defined by an intricate network of irrigation engineering, meeting the Walla Walla River in the broad Walla Walla Valley. This agricultural corridor is sustained by an extensive system of named waterworks, including the Gardena Ditch, Touchet W Side Ditch, and South Ditch, which redirect water across the arid flats to support the settlements of Touchet and Gardena. To the north and west, the terrain rises into the dissected plateaus of Ninemile Canyon and Ash Hollow, where roads like Ash Hollow Rd follow natural drainages through the high ground. The map also records the jurisdictional boundary where the state of Washington meets Oregon, providing a detailed record of land use and water management in the Pacific Northwest.