The Walker Basin

The view depicted in the map looks south across Walker Basin. The image was created using Geographic Information Systems or GIS. GIS allows scientists to collect, store, analyze and display geographic and spatial data. GIS is excellent for combining and integrating information from multiple sources to help scientists understand complex systems in new and powerful ways. For the Walker Basin, scientists collect data from many sources including historical photographs, satellite imagery and field experiments to produce databases for the entire Walker Basin. These data can then be combined and analyzed to learn how water flows through the system, the productivity of the surrounding lands and the efficacy of restoration treatments such as tamarisk removal.