Indicadores de sustentabilidade como apoio à gestão de recursos hídricos.

Abstract

This research analyzes water sustainability of a water basin, through the proposition of indicators and its respective indexes, as support to water resources management. Three classes of indicators are studied: Indicator of Water Potentiality, Availability and Demands; Indicator of Acting of the System of Water Resources Management and Indicator of Efficiency and Use of the Water. A methodology that analyzes the basin through the consideration of different planning levels (basin, dam, sub-basins and sub-basins and municipal districts) are proposed. Partial scales are used to classify the indexes and the global is used for the indicators These are scales composed for five sustentabilidade degrees: very high, high, average, low and very low. The results show that the basin is considered with a low water sustainability, needing the water resources management urgently to be implanted. The study shows that different results can be obtained when it drifts at the level of the great basin in comparison with the other levels (dam, sub-basins, municipal districts). The analyses based on the results allows to propose administration actions for the basin making possible to identify the most sustainable situations in what it refers to the studied indicators.