2020 Map of Nasja Mesa

About this map

Nasja Mesa stands as a prominent high-ground feature within the Glen Canyon National Recreation Area, overlooking the complex hydrology where the Colorado River meets the flooded canyons of Lake Powell. This 2020 map documents the contemporary shoreline and drainage network across the boundary of Kane and San Juan counties. Geologic landmarks such as Twilight Arch and the high vantage of Fifty-mile Point define the northern and western horizons, while the interior is carved by a succession of deep drainages including Anasazi Canyon, Reflection Canyon, and Lehi Canyon. The transition from the elevated San Juan Valley down to the reservoir demonstrates the labyrinthine nature of this landscape, where seasonal flows like Nasja Cr cut through ancient stone. For researchers, the map provides precise locations for named physical features and the modern extent of the reservoir within Navajo Valley and Cottonwood Gulch.