Using complete sentences, explain the impact of large-scale agriculture in the southwestern united states on our water supply.

Irrigation from dams diverted water from the Colorado River and because of the dam, silt was no longer being carried downstream. Ninety percent of the river was diverted for irrigation and the lack of water downstream led to a scarcity of drinking water.
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Irrigation from dams diverted water from the Colorado River and because of the dam, silt was no longer being carried downstream. Ninety percent of the river was diverted for irrigation and the lack of water downstream led to a scarcity of drinking water.