Simulação da cobrança para o investimento em barragens na bacia do Rio Santa Maria/RS

Abstract

The objective in this paper is to simulate some expenditure forms considering infrastructure buildings with the values collected with the water resources use charging. The construction of four dams designated to irrigation, foreseen on Santa Maria River Basin development program, were the enterprises chosen to the job development. The proposed buildings expenditure forms occurred through three distinct scenarios that were the following: the first was sharing among the direct water users from the benefited areas separately by each one of the enterprise, another one was sharing among the direct water users from the benefited areas to all the enterprises and the last one was sharing between users of the whole basin. An important aspect, which justifies this procedure, is the social benefit that agriculture brings to a region development, especially considering the south half of Rio Grande do Sul. To prove that the obtained results were at the same level as the ones established on the places where the charging is already implemented, the values quoted with the three scenarios were compared with the charging values practiced in Ceará, and also with the ones practiced at Paraíba do Sul River Basin in São Paulo. The conclusion was that in some situations the simulated infrastructure buildings expenditure values present lower magnitudes regarding the ones charged in other places in the country. However in other situations this fact was not established. Another important conclusion is that if investing on technology to agriculture probably all the situations would be better contemplated.