JPG File 2.6M

Figure 4.4
Amistad Reservoir, Texas-Mexico border. The 1996 drought in the southwestern United States resulted in a 50-ft drop in water level of Amistad Reservoir. View (B), taken in August 1996, shows the former shoreline of the lake (white region circling the reservoir) and its diminished size (calculated to cover roughly 75 kmē) after the drought (NASA photograph NM22-705-059). For comparison, view (A), taken in October 1989, shows normal water levels covering an area of nearly 200 kmē (NASA photograph STS034-74-101).

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