O uso da água de drenagem na irrigação: um estudo expedito

Abstract

The Curu-Paraipaba Irrigation Project is located in the northern portion of Curu river basin and faces a chronic problem of water shortage during the second semester of every year, once the volume of water diverted from the existent reservoirs is consumed along the valley. The irrigators intend to pump, from the system of ponds existent in the area, a discharge equal to 0.2m3/sec, if there is water availability for that. This discharge would assist around 124 irrigators, which explore individual areas of 3.5 ha, located in the Sector B of the 1st stage of the Project, close to Cana Brava Pond. The use of this resource, during a certain time - about six months a year - would relief the project's water stress during the crisis periods and would also reduce its' dependence on Curu River. The present study intends to evaluate the water potentialities of these resources and to develop exploration rules in order to assure that negative impacts will not happen in the lacustrine system.