This work is concerned with the possibility of reactivation of Irrigated Perimeter of Gravatá, with potential land availability of 934 ha, which is located at Piancó river basin in the southern part of Paraiba State. To perform the analysis, the ORNAP optimization model was used to allocate optimal irrigated areas to a pre-selected set of crops, as well as their water requirement, and the MODSIM P32, a simulation model, was used to verify the water sustainability of Canoas and Saco de Nova Olinda reservoirs, which supply water. The hydro behavior of system was verified through the design of scenarios for climatic and initial volumes for the reservoirs, taking into account a planning time horizon of two years. The results have shown that up to 70% of the available land can be irrigated, even with unfavorable climatic conditions and initial reservoir volumes, if an optimized crop scheduling and irrigation selection, as well as reservoir water allocation, is performed.
optimization; reservoir operation; irrigation
