2017 Map of Winchester

About this map

Winchester sits at the northern edge of this high-desert landscape, defined by the stark geometry of the Columbia Basin Project's irrigation and road networks. The terrain is dominated by a grid of agricultural access routes, including Rd 11.1 NW and the diagonal Winchester Rd NW, which trace the development of the region's mid-20th-century water management systems. A critical hydrological feature, the Winchester Wasteway, carves through the southeastern sections of t19n r25e, carrying irrigation runoff across the arid flats. This drainage system is central to the area's transition from shrub-steppe to productive farmland, supporting the surrounding network of section lines and gravel roads like Ditch Rd. The map illustrates the precision of modern land division in Grant County, where every mile is accounted for by numbered roads and drainage canals.