The professor at the Polytechnic of Madrid explains the error of the Ministry, with the impact on the Transfer
“It is striking that a section of such importance has an old and relatively weak technical support,” said Luis Garrote, professor of the Department of Hydraulic Engineering and the Environment at the Polytechnic University of Madrid, when analyzing the ecological flows proposed in the Plan del Tajo for the section between Bolarque and Aranjuez, and which have put the Transfer in check. In Garrote’s opinion, “it would have been desirable to have more advanced studies to have made this decision.”
This was expressed in the webinar organized by the Sindicato de Regantes del Trasvase and iAgua, in which the professor of the Polytechnic of Madrid offered the details of the rigorous technical study that he has carried out, requested by the Sindicato de Regantes, to demonstrate the “Mistake” made by the Confederation of the Tagus and the Ministry when proposing a flow of 8.5 cubic meters per second in Aranjuez. As LA VERDAD advanced, Luis Garrote maintains that said flow should be 6.2, 27% less, and very similar to the current one. He stressed that the Ministry has applied an outdated methodology and that it must rectify the data.
5.2 m3 / s would suffice in one zone
In the webinar led by the director of iAgua, Alejandro Maceira, the professor considered that there is no need to increase flows, and that the official proposal “goes beyond what is recommended.” Specifically, and sticking to the Almoguera area, near the head of the Tagus, the habitat would be guaranteed with 5.2 m3 / s, according to calculations by the Tagus Confederation itself and with the new methodology. He specified that only 177 meters of that section have been analyzed, compared to the 100 kilometers to Aranjuez. “It is a leap into the void to think that this point can be representative of the entire section.” He recalled that of the eight bodies of water that exist in that part of the river, five are classified in good condition and three do not reach it.
He does not believe that the proposed 8.5 cubic meters per second respond to a premeditated strategy. He believes that the error detected is a piece of information that has gone unnoticed by the Government, within the whirlwind of the development of the Plan del Tajo.
Luis Garrote also emphasized that “the solution to pollution is not dissolution”, but the appropriate treatment against poor water quality. In this sense, he said that the relationship established by some groups between the Transfer and the pollution problem in the middle course of the Tagus, caused by untreated waters from the Community of Madrid, does not hold. “The solution is not to dilute with clean water from the bedside,” he stressed.
Garrote explained that in the summer months, when there are greater pollution problems, more water circulates through Aranjuez, up to 15 cubic meters per second, to attend to the irrigation of various areas of the Tagus. He criticized that many of these irrigation systems have not been modernized, and that they have “incomprehensible endowments of up to 12,000 cubic meters per hectare per year.”
The Consell negotiates with the Government to remove the ‘tax’ from the aqueduct
The president of the Generalitat Valenciana, Ximo Puig, said yesterday that negotiations are being carried out with the central government to eliminate the fee that the irrigators of the Tajo-Segura pay to the hydrographic confederations for the maintenance of the infrastructure. This was communicated to the president of Riegos de Levante, Javier Berenguer, at the meeting held at the Palau de la Generalitat, in which they agreed on the need to eliminate the ‘appraisal’ which represents an annual cost of 2.5 million euros for this community of irrigators, regardless of the arrival of water. For the entire Transfer, there are 12 million per year, since this part of the rate is applied to the nominal annual volume of 400 hm3. Puig also reiterated the position of the Consell to continue claiming the Tajo-Segura Transfer, ensuring that the necessary volumes of water will not be renounced.