Robert H. Webb

Robert H. Webb is a research hydrologist and geoscientist, who retired from the National Research Program, Water Mission Area, US Geological Survey and is currently an adjunct professor at the University of Arizona.
The Changing Mile Revisited The Changing Mile Revisited
The Changing Mile Revisited

The Changing Mile Revisited

An Ecological Study of Vegetation Change with Time in the Lower Mile of an Arid and Semiarid Region

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Floods, Droughts, and Climate Change Floods, Droughts, and Climate Change
Floods, Droughts, and Climate Change

Floods, Droughts, and Climate Change

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Grand Canyon, A Century of Change Grand Canyon, A Century of Change
Grand Canyon, A Century of Change

Grand Canyon, A Century of Change

Rephotography of the 1889-1890 Stanton Expedition

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Requiem for the Santa Cruz Requiem for the Santa Cruz
Requiem for the Santa Cruz

Requiem for the Santa Cruz

An Environmental History of an Arizona River

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The Ribbon of Green The Ribbon of Green
The Ribbon of Green

The Ribbon of Green

Change in Riparian Vegetation in the Southwestern United States

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