
The San Joaquin River and its intricate network of irrigation and drainage channels dominate this San Joaquin Valley landscape in the early 1920s. This survey, conducted shortly after the first World War, illustrates the transformation of the region into an intensive agricultural hub. Key ranching operations such as White House Ranch, Pomona Ranch, and Columbia Ranch are distributed throughout the basin, while the Aliso Canal and Chowchilla Canal demonstrate the sophisticated water management systems required for local industry. Near the southern edge, the settlement of Mendota serves as a central point for these operations. The presence of Aliso Mill and various water bodies like Mowry Lake and Lone Willow Slough highlights the era's reliance on the natural hydrology of the river forks and artificial canals to sustain the burgeoning ranching economy.
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