2023 Map of Winchester

About this map

Winchester serves as the primary focal point of this Grant County landscape, characterized by the extensive irrigation and drainage infrastructure of the Columbia Basin Project. The terrain is defined by the Frenchman Hills and the artificial waterways that manage the region's agricultural runoff, specifically the Winchester Wasteway and the Frenchman Hills Wasteway. These features demonstrate the massive scale of 20th-century water management required to transform this arid environment into productive farmland. The map reveals a precise grid of rural routes such as Winchester Rd NW and Ditch Rd, which facilitate access to the surrounding fields and wetlands. This 2023 survey by the U.S. Geological Survey provides an essential perspective on the contemporary state of Washington's managed hydraulic landscapes.