Water quality index and spatio-temporal perspective of a large Brazilian water reservoir

The water spatio-temporal variability of the Irapé Hydroelectric Power Plant reservoir and its main tributaries was evaluated by analysing the temporal trend of the main parameters and applying the Canadian Council of Ministers of the Environment Water Quality Index (CCME WQI), using data from 2008...

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Autores principales:	Karla Lorrane de Oliveira, Ramatisa Ladeia Ramos, Sílvia Corrêa Oliveira, Cristiano Christofaro
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	environmental statistics hydroelectric reservoir spatio-temporal perspective water quality index Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
Acceso en línea:	https://doaj.org/article/68eb5936fb0341079746984e7442959c
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spelling	oai:doaj.org-article:68eb5936fb0341079746984e7442959c2021-11-06T07:11:59ZWater quality index and spatio-temporal perspective of a large Brazilian water reservoir1606-97491607-079810.2166/ws.2020.374https://doaj.org/article/68eb5936fb0341079746984e7442959c2021-05-01T00:00:00Zhttp://ws.iwaponline.com/content/21/3/971https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798The water spatio-temporal variability of the Irapé Hydroelectric Power Plant reservoir and its main tributaries was evaluated by analysing the temporal trend of the main parameters and applying the Canadian Council of Ministers of the Environment Water Quality Index (CCME WQI), using data from 2008 to 2018. This reservoir is in Minas Gerais, Brazil, and covers an area of approximately 143 km2 across seven municipalities. The dissolved iron (DFe) presented the highest percentage of standards violations (31.7% to 80.5%), most frequently in the reservoir tributaries. The Mann–Kendall tests indicated that the monitoring stations showed an increasing trend of 78.5% N–NH4+ and 64.1% DFe. During the evaluated period, the reservoir waters were classified as excellent (1.2%), good (61.3%), acceptable (29.5%), and poor (8.0%) according to the WQI for the proposed use. The poorest quality classes were more frequent in the tributaries, especially in the year 2009. The WQI seasonal assessment indicated a worsening during the rainy season in 57% of the stations, as a result of external material transport to the water bodies. The CCME WQI, in conjunction with temporal statistical analysis, contributed to the interpretation of the monitoring data, generating important information for reservoir water quality management. HIGHLIGHTS The large Brazilian reservoir and tributaries water was studied by statistical techniques in conjunction with a WQI.; Mann-Kendall tests indicated the stations with an increasing trend in the parameters analyzed.; The seasonal WQI indicated a worsening in the stations in the rainy seasons.; CCME WQI and temporal statistical analysis generated information that can be used in reservoir management.;Karla Lorrane de OliveiraRamatisa Ladeia RamosSílvia Corrêa OliveiraCristiano ChristofaroIWA Publishingarticleenvironmental statisticshydroelectric reservoirspatio-temporal perspectivewater quality indexWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 3, Pp 971-982 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	environmental statistics hydroelectric reservoir spatio-temporal perspective water quality index Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	environmental statistics hydroelectric reservoir spatio-temporal perspective water quality index Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Karla Lorrane de Oliveira Ramatisa Ladeia Ramos Sílvia Corrêa Oliveira Cristiano Christofaro Water quality index and spatio-temporal perspective of a large Brazilian water reservoir
description	The water spatio-temporal variability of the Irapé Hydroelectric Power Plant reservoir and its main tributaries was evaluated by analysing the temporal trend of the main parameters and applying the Canadian Council of Ministers of the Environment Water Quality Index (CCME WQI), using data from 2008 to 2018. This reservoir is in Minas Gerais, Brazil, and covers an area of approximately 143 km2 across seven municipalities. The dissolved iron (DFe) presented the highest percentage of standards violations (31.7% to 80.5%), most frequently in the reservoir tributaries. The Mann–Kendall tests indicated that the monitoring stations showed an increasing trend of 78.5% N–NH4+ and 64.1% DFe. During the evaluated period, the reservoir waters were classified as excellent (1.2%), good (61.3%), acceptable (29.5%), and poor (8.0%) according to the WQI for the proposed use. The poorest quality classes were more frequent in the tributaries, especially in the year 2009. The WQI seasonal assessment indicated a worsening during the rainy season in 57% of the stations, as a result of external material transport to the water bodies. The CCME WQI, in conjunction with temporal statistical analysis, contributed to the interpretation of the monitoring data, generating important information for reservoir water quality management. HIGHLIGHTS The large Brazilian reservoir and tributaries water was studied by statistical techniques in conjunction with a WQI.; Mann-Kendall tests indicated the stations with an increasing trend in the parameters analyzed.; The seasonal WQI indicated a worsening in the stations in the rainy seasons.; CCME WQI and temporal statistical analysis generated information that can be used in reservoir management.;
format	article
author	Karla Lorrane de Oliveira Ramatisa Ladeia Ramos Sílvia Corrêa Oliveira Cristiano Christofaro
author_facet	Karla Lorrane de Oliveira Ramatisa Ladeia Ramos Sílvia Corrêa Oliveira Cristiano Christofaro
author_sort	Karla Lorrane de Oliveira
title	Water quality index and spatio-temporal perspective of a large Brazilian water reservoir
title_short	Water quality index and spatio-temporal perspective of a large Brazilian water reservoir
title_full	Water quality index and spatio-temporal perspective of a large Brazilian water reservoir
title_fullStr	Water quality index and spatio-temporal perspective of a large Brazilian water reservoir
title_full_unstemmed	Water quality index and spatio-temporal perspective of a large Brazilian water reservoir
title_sort	water quality index and spatio-temporal perspective of a large brazilian water reservoir
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/68eb5936fb0341079746984e7442959c
work_keys_str_mv	AT karlalorranedeoliveira waterqualityindexandspatiotemporalperspectiveofalargebrazilianwaterreservoir AT ramatisaladeiaramos waterqualityindexandspatiotemporalperspectiveofalargebrazilianwaterreservoir AT silviacorreaoliveira waterqualityindexandspatiotemporalperspectiveofalargebrazilianwaterreservoir AT cristianochristofaro waterqualityindexandspatiotemporalperspectiveofalargebrazilianwaterreservoir
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Water quality index and spatio-temporal perspective of a large Brazilian water reservoir

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