Cartographic Representation of the Spatial, Morphological and Topographical Characteristics of Jahi Diwana valley basin, northeastern Iraq , using geographic information systems (GIS)

Abstract

    The study area is defined by latitudes (11" 5" 35º - 10" 25" 35º) north and longitudes (43" 15" 45º - 25" 41" 45º) east. Geographical information in the study is characterized by high accuracy in extracting spatial, morphological and topographic characteristics from radar data, as well as the ability to create highly efficient databases that can be used in the analysis of morphological characteristics. It became clear through the research that the geological formations differ in the basin of the study area, as there are about (11) geological formations, the Wadi Jahi Diwana basin depends for its water supply on the amount of rainfall that begins in the month. From October until the end of May. The height of the basins ranges from (400) meters at its mouth in the Diyala River to (1800) meters in the western parts of it. It differs from one basin to another, with the largest area in the Jahi Dee wana Basin, and the least area in the Jokolgo Basin. As well as the contrast of morphological and topographical characteristics of the main basin and secondary basins.