NWS Flagstaff on X: Thinking of hiking in the Grand Canyon this week? Not a good idea for the lower elevation parts of the canyon. An Excessive Heat Warning has been issued

NWS Flagstaff on X: Wishing for snow? Us too! Snow isn't in the forecast, but we'll only have one more day of above normal heat today. Heat Warnings are in effect for

National Weather Service issues high heat warning for Grand Canyon, News

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Grand Canyon National Park - Discover Flagstaff

California woman, 49, collapses and dies while hiking the Grand Canyon in 114 degree heat

PDF) Biological responses to high-flow experiments at Glen Canyon Dam

The Project Gutenberg eBook of The Romance of the Colorado River, by Frederick S. Dellenbaugh

PDF) Mapping Grand Canyon: A Chronological Cartobibliography

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Glen Canyon Dam/Smallmouth Bass Flow Options Draft Environmental Assessment, PDF, National Environmental Policy Act

Thruhiking the Arizona Trail: Flagstaff to Utah – Infinite Geography