Text Box: Figure 2.  (Above) Landsat 753 image of the greater Phoenix region illustrating its alluvial setting near the confluence of the Salt and Verde Rivers and the surrounding mountains.  (Below) Landsat 752 drape on 100m USGS DEM. View is from south Tempe/Chandler toward the South Mountains and Estrella Mtns with the White Tanks in the far distance on the right. Note the complicated pattern of land cover.