2014 Map of Imperial Reservoir

About this map

The Colorado River defines the border between Arizona and California in this arid river valley landscape. Centered on the Imperial Reservoir and the recreation-focused settlement of Martinez Lake, the area showcases a complex network of wetlands and backwaters preserved within the Imperial National Wildlife Refuge. The irrigation infrastructure critical to the region's agriculture is prominently marked, including the Gila Main Canal and Senator Wash Reservoir. Historic river access points like Fishers Landing and Castle Dome Landing indicate the long-standing importance of this waterway for navigation and local transport. To the east, the map detail extends to the Laguna Army Airfield (Yuma Proving Ground), while the western horizon is dominated by the jagged peaks of the Chocolate Mountains, accessible through Explorers Pass.