The use of Geographic Information System to select best location for Oasis in west of Iraq

The study area was selected in Al-unbar governorate occupies an area 417906.7 ha, located in the West of Iraq, Al-unbar province , All the remote sensing process and geographic information systems carried out at the college of agriculture - University of Baghdad- desertification combat, the Digital Elevation Model (DEM) was used to investigate the lower lands in study area; Normalized difference vegetation index was used to detect vegetation in the study area, The range of NDVI values started from - 0.33617 to 0.258883, no vegetation referred to negative numbers, poor vegetation, moderate vegetation, dense vegetation, very dense vegetation, These classes covered the study area about 42256.6 ha, 100282 ha, 109966 ha,104371 ha, 61041.1 ha respectively, Three classes for location of Oasis were presented in the study area, suitable class occupies an area 122782 6 ha about 29.38%, Moderate suitable class occupies an area 130347. 1 ha about 31.19%, No suitable class occupies an area 164777 ha about 39.42%.