Rainfalls and Their Importance in the Development of Water Resources: An Empirical Study of Rainfalls of Coastal Region during the Period (2002-2012)

Because rainfall in the coastal area is high and water projects are nearly missing, we think it is important to make use of available water resources. In order to predict future rainfalls and suggest proper management of resources, we created a mathematical model linking rainfall amounts between demand (population, agricultural and industrial) on water resources during the period (2000-2012). Results show the following: 1. Rainfalls decreased during the period ( 2002-2012) at an annual rate of (1.84%). 2. Demand on water resources increased during the period (2002-2012) at an annual rate of (3.41%) of the population demand, and (3.47 %) of the agricultural demand, and 6.25% for industrial demand. 3. There is a surplus of available water resources and the size of demand for them, with the surplus decreasing during the period (2002-2012) at an annual rate (2.97 %). 4. The estimation of the surplus between the amount of available water resources and the size of the demand for them will decrease in 2023 from what it was like in the year 2013 at an annual rate (-3.23%).

Predict the needs of the water resources of the coastal zone within the framework of regional planning

This research aims to develop a mathematical model linking the available water resources and the demand of population and agricultural and industrial on these resources, where they were to rely on time series from 2000 until 2011 and study and know their direction and growth, and it was the most important results: 1- increasing the size of the demand (population, agricultural and industrial ) on water resources during the period (2000-2011), where he found a positive relationship between the size of a very strong demand on water resources and time. 2 - increasing the volume of surface water resources and groundwater available during the period (2000-2011), where he found a positive relationship and a very solid between the size of surface water and groundwater resources and time available. 3 - there is an excess of total available water resources and the total volume of demand. 4 - there is a statistically significant relationship between the total volume of available water resources, and demand (population, agricultural and industrial) on them, where we can and relying on multiple regression equation to predict the total volume of water resources through the volume of demand ( population, agricultural, industrial) on them.