Fight against the drought.

Juan G. R. Fight against the drought.

Newspaper Information. Page 14, 19/04 / 2008. Alicante . Spain .

The average volume of water reserves in the reservoirs at Spain in the last 5 years is below the historical average, which indicates that the country is going through a period of drought, with a current balance of water reserves in the reservoirs 18-30% of reservoir capacity for the Mediterranean coastal strip represented by the watershed: South, Segura, Jucar and Cataluña, with values from 35% to 55% for the remaining represented by the River Basins of: Guadalquivir , Guadiana, Tajo, Duero and the Ebro, only there are values higher than 60% capacity reservoir to the basin North, the average value of water reservoirs for the entire country is of 48%, reflecting that we must confront the period of spring and summer with an appropriate strategy of water use, even more when you take into consideration that rainfall in Spain during 2007 have been below the average for the period 1971-2000.

In the fight against drought should not be spared the force used, it is necessary to combat with more reservoirs, transfers, desalination, more control and organization, with the aim of ensuring a greater volume of water used.
Currently within the same hydrologic basin there are sub-deficit basins and other with water surplus as a result of rainfall increasingly unstable, which brings as a consequence one must be more efficient in projecting hydraulics, control and exploitation of surface and ground water resources, flood control and environmental protection.

Moreover the world’s population increases sharply and development itself makes the water resources are scarce and more exposed to a greater degree of contamination, indicating that demand for water and agricultural products also increased and will require exploitation more rational water resources.

The losses caused by drought and floods in Spain during the past 5 years are of billions euros, so it is advisable to make a distribution of water resources within the same basin, and between different basins in order to achieving a rational use of water, which will allow to satisfy the water demands of industry, population, tourism, reduce the effects of floods, achieve greater stability in agricultural production and declining costs per tonne, which allow agricultural products are cheaper and more competitive in a world so globalize.

As a result of the foregoing it is advisable to build more reservoirs to regulate runoff, which store water in times of abundance to ensure their proper use in difficult times and reduce the impact of floods.

There is a need for a more detailed study of runoff and sub-basins in order to achieve greater regulation of runoff and achieve greater assurance of water in the reservoirs, as well as build more transfers between regions with water shortages and surpluses, it is necessary to build more desalination plants to ensure supply to the city and make an appropriate strategy for irrigation, upgrading irrigation systems, recharge aquifers and further reuse wastewater. The use of transfers, desalination plants, dams and waterworks must be accompanied by the relevant feasibility study to determine the economic effectiveness of the same.

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