Please use this identifier to cite or link to this item:
|Title||Assessment of Rainwater Losses due to Urban Expansion of Gaza Strip|
Water is a vital source supporting all forms of developments in Gaza Strip. Unfortunately, water scarcity is the main characteristic of the Gaza Strip. Throughout the years, the Gaza Strip has been experiencing an increasing shortage of water, due to growing demands and its location in a semi-arid region with a small average rainfall of 300 mm/yr. The main source of water in the Gaza Strip is the groundwater aquifer that is naturally recharged from rainfall. Over the time, continuous increase of population resulted in dramatic urban expansion, which has a direct influence in reducing groundwater recharge and increasing the surface run-off. To quantify the losses due to run-off, Geographical Information Systems (GIS) as a measurement tool, in addition to the soil conditions and metrological data for more than 20 years is used. The comparison between various scenarios like the Gaza Strip without urban areas, agricultural land, the existing land use and the future expansion has led to the following findings; the amount of delivered rainwater to the groundwater accounts for 125 Mm3 and 55 Mm3 a year assuming that the Gaza Strip is an open and fully cultivated areas, respectively. The urbanized area represents around 16% in the year of 1998 and 21% in the year of 2005, and is expected to increase in the next years due to the rapid increase in population to represent 33% and 45% for the years of 2015 and 2025 respectively. In the meantime, the water demand will increase due to the expansion of water supply systems. The total amount of rainwater losses due to urbanization as surface run-off is estimated 14.5 Mm3 in the year of 1998 and expected to increase to about 20 Mm3, 35Mm3, and 52 Mm3 for the years of 2005, 2015 and 2025 respectively. These will results in an increasing pressure on underground water resources, which has lead to an irreversible depletion of the aquifer.
|Publisher||the islamic university|
|Files in this item|