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This reconnaissance map of the Salton Sink in California, originally surveyed in 1908 and reprinted in 1947, was produced by the U.S. Geological Survey under the Department of the Interior. It captures the complex topography and hydrology of the Salton Sink, an area that includes the Salton Sea, the Colorado River Delta, and surrounding desert regions. The map illustrates contours, elevations, and geological features essential for understanding the area's landscape dynamics.
Salton Sink’s defining feature, the Salton Sea, appears prominently with surrounding annotations indicating irrigation canals, water basins, and proposed reclamation works, reflecting early efforts to manage the arid land for agricultural use. Key geographical elements such as the Imperial Valley, Coachella Valley, and the Colorado River are depicted, along with a detailed delineation of natural and man-made features, including canals and settlements.
Notably, annotations along the Colorado River detail proposed diversions and reclamation efforts, a testament to early 20th-century ambitions to harness and control the river for agricultural and settlement purposes in Southern California.
![[Imperial and San Bernardino Counties] Sketch To Accompany Report of Reconnaissance Head Gate Crossing of Colorado River To Bristol, Cal. March 20, 1903](https://storage.googleapis.com/raremaps/img/small/31857.jpg)
![San Diego and Southern California. The Climate, Resources and Future Prospects (Written Under the Auspices of the San Diego Chamber of Commerce [caption title]](https://storage.googleapis.com/raremaps/img/small/107381.jpg)
