1957 Map of Holtville NE

About this map

The East Highline Canal serves as a sharp hydrological boundary in the California desert, separating the intensely irrigated agricultural plots of the Imperial Valley from the arid expanse of the Imperial Sand Dunes Recreation Area. To the west, a dense network of water management features, including the Holtville Main Drain and an alphabetized series of laterals from Oasis Lateral Drain to Pomelo Lateral Drain, illustrates the complex engineering required to sustain desert farming. This 1957 survey, with revisions into the late 1970s, captures a landscape defined by industrial agriculture and resource extraction, evidenced by a Landing Strip and a Gravel Pit near the canal. The transition from the rigid grid of the valley to the fluid topography of the Sand Dunes reflects the environmental contrast of the Imperial County borderlands.