By the early twentieth century, groundwater pumping technology advances and private canal construction lead to an increase in lands under irrigation. The withdrawal of groundwater heavily impacted groundwater levels in many areas.

The Image and description for this slide were taken from: Phillips, S.E., P.A. Kelly, and D.F. Williams. 2005. Landscape Change in the San Joaquin Valley of California. Pre-European Settlement to 2000.

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Slide # 5 of 61