1948 Map of Clark Ranch

About this map

Clark Ranch and its neighboring Clark School anchor this 1940s landscape, situated along the eastern bank of the San Pedro River. The terrain is defined by a dense network of desert washes, including Mulberry Wash, Cottonwood Wash, and Clark Wash, which drain the elevated ground surrounding Bunker Hill. This survey reveals a reliance on groundwater in the arid Pinal County interior, evidenced by numerous windmills and specifically labeled water sources like an Artesian Well (Hot) and an Artesian Well (Warm). Evidence of early industrial activity is found near the river at a noted Smelter. The convergence of these natural drainage systems into the San Pedro valley highlights the historical importance of the river corridor for ranching and settlement in this portion of the Arizona desert.