2013 Map of Chromo

About this map

Chromo and the high mesa country of Archuleta County are defined by a complex network of water engineering designed to sustain agriculture in this high-elevation landscape. The Navajo River and Little Navajo River serve as the primary arteries, feeding a series of irrigation channels such as the Midland Ditch, Enterprise Ditch, and Southside Ditch. This reliance on managed water is further evidenced by the Blanco Tunnel and Oso Tunnel, which cut through the terrain to redirect flow. The settlement pattern clusters near these water sources, with Spring Valley and Vigil Mesa marking the southern habitable zones before the terrain rises into the San Juan National Forest. The map also captures the transition from working ranch land to the high peaks of the Chalk Mountains and Chromo Mountain, illustrating how the early 21st-century landscape remains deeply tied to its hydrological infrastructure.