Thermal Regime and Stability of Jurumirim Reservoir (Paranapanema River,São Paulo,Brazil)

Thermal regime and stability in Jurumirim Reservoir (São Paulo, Brazil) were studied for a year. Isothermy and thermal stratification were observed from June to September and from October to March, respectively. The annual heat budget was 14.0 Kcal · cm^?2 and average heat gain per day was 67.2 cal · cm^?2 · day^?1. Maximum stability and wind work reached 324.2 and 3,037.5 g · cm · cm^?2, respectively. According to thermal structure and heat content, Jurumirim Reservoir was classified as a warm tropical monomictic lake.