Factibilidad del sistema de derivación Marcabelí-El Bunque primer nivel de desarrollo en Ecuador del Proyecto Binacional Puyango-Tumbes en el marco de los acuerdos vigentes

Abstract

In this degree work, the formulation and analysis of an alternative for the Marcabelí- El Bunque derivation system is presented as the first level of development of the Puyango-Tumbes Binational Project. On September 27, 1971, Ecuador and Peru sign the Binational Agreement to take advantage of the Puyango-Tumbes and Catamayo- Chira binational watersheds. In December 2014, in the Declaration of Huaquillas, Ecuador authorizes Peru to do the works unilaterally for the use of water resources. Therefore, it is important to consider alternatives that allow Ecuador to ensure it is sovereign right for the use of a large water resource essential for the social and economic development of border areas. The proposed diversion system consists of a concrete dam built on rock in the Marcabelí canton with its regulation reservoir which allows to transfer to the Arenillas river basin, an average flow of 47 m3 / s for agricultural development of 50 thousand hectares in the province of El Oro. For reasons of economic efficiency the option of building the two-stage regulation dam has been considered. It is a dam with built-in discharge with floodgates; and the second stage includes the installation of the dam gates. In the same way, a Marcabelí-Guayacán transfer tunnel is proposed that meets the requirements of the 1985 Quito Agreement in which a maximum derivable flow to the Arenillas river basin of 52 m3 / s is established.