Using the integration of GIS and RS in the initial selection of the site for the construction of the new Al Diwaniyah city and its alternatives in Iraq

Abstract

Sustainable development has the highest priority in all parts of the world and developing countries, and one of the most important issues in the field of urban planning is the correct and proper planning for urban expansion and the establishment of new cities and the correct use of land use in these cities and obtaining the best sustainable situation. As Al Diwaniyah Governorate in Iraq suffers from a severe shortage of urban and residential areas, with a significant increase in random growth and encroachment on other lands. From this logic, the integration of both remote sensing (RS) and geographic information systems data and the overlap of these programs between them and the production of analyzes, images and results in this work was made to propose a new city in the Al Diwaniyah governorate for the governorate center with an area of 129 km2. Where more than one area has been studied according to criteria, the most important of which is the lack of transgressions and encroachments in the proposed area and taking into consideration not to overtake agricultural areas, as Al Diwaniyah Governorate is one of the agricultural governorates and it was important to choose areas with the least vegetation cover, and through geographic information systems, an area was chosen Northeast of the old city, with an area of 49 km2, which represents 38% of the area of the old city. And use vegetation indicators to map and define vegetation cover and cultivated land versus urban and barren areas. This indicator is the Normalized difference vegetation index (NDVI), The results obtained indicated that the area of the proposed area is 49 km2 and about 5 km2 of green and cultivated lands are 10.2% of the total area of the proposed area. The size of the proposed area, which constitutes a suitable and good proportion for a new city.

Flood Risk Analysis: The Case of Tigris River (Tikrit /Iraq)

“…Another factor that may influence the incidence of floods is the development of economic and social activities and changes in land use in floodprone areas, as these actions modify floodplains' response to flood risk [2, 3]. Many agricultural regions, particularly those near river banks and at risk of flooding, are being used as residential areas as a result of the rapid increase in the population [4]. One of the most significant challenges in water resources engineering is the management of flood disasters and the predictions of unexpected changes in the water level of rivers, especially in the residential areas close to the riverbanks of the rivers.…”

River Flood Modelling For Flooding Risk Mitigation in Iraq

“…Due to the rapid increase in population, many agricultural areas are being utilized as residential areas especially; those that are close to the river banks and under the threat of flooding [5]. Iraq is considered one of the poor and developing countries where there are challenges in finding water data as well as the research studies in the water resource area have been rare and limited [6].…”