Multivariate analysis of bathymetry in the evaluation of reservoirs in Serra Talhada, Pernambuco, Brazil

Alan Cézar Bezerra,Geber Barbosa De Albuquerque Moura,Renata Akemi Shinozaki-Mendes

doi:10.18406/2316-1817v12n220201430

Alan Cézar Bezerra, Geber Barbosa De Albuquerque Moura + Show 1 more

Open Access

https://doi.org/10.18406/2316-1817v12n220201430

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Abstract

The constant demand for water resources has increased the need for research and adoption of new water use and management practices. In this sense, this work utilizes multivariate cluster analysis to identify the correlation of respective depths of bodies of water in Serra Talhada city, over different periods of rainfall. In order to achieve this, four bathymetric surveys were carried out during one year for three reservoirs within the municipality of Serra Talhada, then cluster analysis and multiple modeling were used to identify the most influential variables on reservoir depth. Based on our results, the multivariate grouping technique can be used to define periods of higher and lower water storage, through bathymetric data, as well as to understand the effects of regional precipitation variability on the water levels of reservoirs. In addition, the generated model indicated a clear influence of the previous month’s precipitation on the bathymetry of the reservoirs.

Highlights

Increasing demand for water resources to meet the need of human consumption, as well as industrial and agricultural uses, has required research and adoption of improved water use practices
According to Lima et al (2013), Brazil has several reservoirs that were formed mainly by the damming of rivers in order to meet certain objectives, such as water supply, course regulation, electricity generation, irrigation, navigation and recreation, with the greatest concentration of these reservoirs being constructed in northeastern Brazil in order to meet the specific needs of this region
Bathymetry, which is the science of determining depth of bodies of waters such as oceans, seas, lakes, and rivers, can help understanding the dynamics of bodies of water

Summary

Introduction

Increasing demand for water resources to meet the need of human consumption, as well as industrial and agricultural uses, has required research and adoption of improved water use practices. According to Lima et al (2013), Brazil has several reservoirs that were formed mainly by the damming of rivers in order to meet certain objectives, such as water supply, course regulation, electricity generation, irrigation, navigation and recreation, with the greatest concentration of these reservoirs being constructed in northeastern Brazil in order to meet the specific needs of this region In this sense, bathymetry, which is the science of determining depth of bodies of waters such as oceans, seas, lakes, and rivers, can help understanding the dynamics of bodies of water. The water supply of cities and agricultural activities depends on the quantity and quality of these waters, which requires constant monitoring and management (BRAGA et al, 2015)

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