Hydrodynamic Modeling and Morphological Analysis of Lake Agua Preta: One of the Water Sources of Belem-PA-Brazil

作者：Holanda Patricia da Silva^*; Cavalcante Blanco Claudio Jose; de Almeida Cruz Daniel Onofre; Lopes David Franco; Baganha Barp Ana Rosa; Secretan Yves

来源：Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2011, 33(2): 117-124.

• hydrodynamic modeling
• morphological analysis
• Lake Agua Preta

The main contribution from this paper includes the hydrodynamic modeling and morphological analysis of Lake Agua Preta in Belem city, Para State, Brazil. The lake bathymetry was taken through the data provided by COSANPA (the local sanitation and water supply company) dating back to 1975, and from a 2009 field study. Both bathymetries produced two terrain elevation models, which were used for morphological analysis and hydrodynamic simulations. The morphological analysis has revealed that, from 1975 to 2009, the annual mean rate of sedimentation varies between 23,065 and 29,081 m(3)/year. Through this result, the sedimentation time of Lake Agua Preta, from 2009, has been calculated, which varies between 295 and 381 years, maintaining the same rate of sedimentation, water consumption and pumping. The hydrodynamic model simulated the depths and velocities, showing a slight flow with velocities ranging from 0 to 33 cm/s. This flow is established between water input and output of the lake, which is used as reservoir of Belem city.

• 出版日期2011-6