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The delta region begins just beyond the
Colorado River's departure from the United States' southern
boundary, and includes portions of the Mexican states
of Sonora and Baja California stretching south to the
upper Gulf of California. The delta once received all
of the ~15 million acre-feet of annual water flow from
the United States. Now only ten percent of that flows
across the border, all of which is consumed by municipal,
industrial, or agricultural users in Mexico. The only
water that now
regularly reaches the delta region comes from agricultural
wastewater.
This
PDF document is generously provided by David
L. Alles. You can read more of his work on the Colorado
River on his
website.
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