<b>Estimation of useful lifetime for a small reservoir</b> - DOI: 10.4025/actascitechnol.v31i1.1517

Abstract

The purpose of this work is to compare two methods for time estimation of useful life for a small and shallow reservoir, located at Pirassununga's Municipal District, in São Paulo State/Brazil: sedimentometry and bathymetry. The model indicated a useful lifetime around 50 years for the studied dam. The values are between 51 year for the initial years of 1998/1999, and 46 year for the final years of 2004/2005, having an oscillation between years of 1999/2000, of 27 years, and 2000/2001, of 76 years. These differences probably are due to global climatic changes phenomena, and anthropomorphic activities in the region. The obtained results showed that it is possible to foresee useful lifetime for small dams through the sedimentometric method knowing the correction coefficient value (K'). The coefficient is calculated using time values of useful lifetime calculated by the sedimentometric and batimetric methods simultaneously, during the period of one year.