Colorado River Maximum Flows Graph

High Colorado River flows are, in part, the result of heavy snowfall that blanket the mountains throughout the Colorado River Basin. This graph shows the maximum flow recorded in the Colorado River below Glenwood Springs, Colorado, during the months of May, June, and July from 1999-2023.

View Colorado River flows over time

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Maps and graphs may be used for non-commercial purposes provided that they are not altered or edited and they are appropriately credited.

All map products should be credited to Stephanie Smith, Grand Canyon Trust, unless otherwise noted. A hyperlink to the Grand Canyon Trust website is appreciated.

For higher quality images or custom sizing please contact our communications director, Ashley Davidson, at adavidson@grandcanyontrust.org

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