Hulse, D., S. Gregory, J. Baker. (Eds). 2002. Willamette River Basin Planning Atlas: Trajectories of environmental and ecological change. (2nd edition), Oregon State University Press, Corvallis, Oregon 97333. p. 180.

The Willamette River Basin Planning Atlas uses GIS to describe physical, biological and human aspects of the Willamette River basin.  It is predicted that the population of the Willamette Valley will increase by 1.7 million people by the year 2050.  Authors predict changes to the Willamette Basin which might occur as a result of this population increase.  Changes in land use and land cover are depicted under 3 different future scenarios: a conservation scenario, a development scenario and a scenario which reflects no change in current land and water use policies.  Using GIS, these 3 scenarios are depicted spatially throughout the Willamette River basin.  Finally, considering the human pressures that will ensue with population growth, authors identify suitable sites for restoration along the Willamette River.  Authors recommend that restoration options which have maximal ecological benefit and minimal social constraints be pursued.  These sites can be identified using social and ecological GIS data represented over time.

Willamette River basin trajectories of change