Operação ótima e integrada do sistema hídrico composto pelos reservatórios do alto Capibaribe.

Abstract

This work is concerned with the design of an optimal operation for a system of five reservoirs, which are the Poco Fundo, Tabocas, Jatauba, Oitis and Machado, located at the upper part of the Capibaribe river basin in the semiarid region of Pernambuco state. Due to the water shortage, generally during nine months of the year, they are very important for the social and economic development of that region. The solution presented herein was obtained with the CISDERGO (Cropping and Irrigation System Design with Optimal Reservoir and Groundwater Operation), which is based on linear programming, and ORNAP (Optimal Reservoir Network Analysis Program), which is based on nonlinear programming, softwares regarding the maximization of the net profit attained from the selection of reservoirs water releases, choice of crops and their areas at five potential irrigated croplands and fishing activities at each reservoir. All the physical, agronomic and operational constraints, including the sustainability of the reservoir, were taken into account. The analysis was made based on climate scenarios of a twelve months period, which represents rainy, dry and average years, as well as reservoirs' initial conditions, cities water demand and regional cropping patterns.