Reservoir Operation Employing Hec-Ressim: Case Study of Tucuruí Dam, Brazil (PAP014913)

Código

PAP014913

Autores

Pedro Guilherme de Lara, Juliana D'Amoreira Lopes, Gilson Machado da Luz, Nadia Bernardi Bonuma

Tema

Flood forecasting and early warning systems

Resumo

Due to Brazilian hydroelectric potential, the construction of dams is a common practice in the country. Its purposes are multiple, playing an important role for energy production, water supply, flood and drought control, irrigation, recreation, navigation, and so on. Although the benefits entailed to society, the issue of operation of reservoirs should be object of study and critical evaluation, since they are not free from extreme event occurrences. Therefore, the operation of the reservoirs is a relevant topic of the management of water resources, and conflicts about their operation constraints can be related to water use at catchment scale. So economic, social and environmental aspects must determine the goals of the operational rules to minimize those conflicts, and support the Brazilian legislators to ensure the proper laws and regulations to manage the water resources dependent on reservoirs. The employment of computational models can assist managers and legislators nationwide in the search of these regulations for the determination and maintenance of the reservoir operation for multiple purposes. This paper presents a straightforward case study employing the HEC-ResSim model. HEC-ResSim is one of the simulation models that possess of multi reservoir simulators and can simulate water resources systems. The presented study was subsidized by daily observed data from 2001 up to 2006 of pool elevation, inflow and outflow discharge. In addition, geometry and hydraulic data from dam and reservoir were employed to develop the numerical model. The hydrological analysis was performed to understand the operational constraints of the Tucuruí Dam´s reservoir, located in the state of Pará, Brazil. The operational rules were evaluated according to the characteristics of the reservoir storage, the flow capacity of the spillways and the flow capacity of the river drainage downstream of the Tucuruí Dam. Finally, there is discussion how to integrate the tool in a real-time forecast system.