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...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2021-05-01
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| Series: | Water Supply |
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| Online Access: | http://ws.iwaponline.com/content/21/3/971 |
| _version_ | 1818740084228227072 |
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| 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 |
| collection | DOAJ |
| 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.; |
| first_indexed | 2024-12-18T01:35:06Z |
| format | Article |
| id | doaj.art-68eb5936fb0341079746984e7442959c |
| institution | Directory Open Access Journal |
| issn | 1606-9749 1607-0798 |
| language | English |
| last_indexed | 2024-12-18T01:35:06Z |
| publishDate | 2021-05-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Supply |
| spelling | doaj.art-68eb5936fb0341079746984e7442959c2022-12-21T21:25:30ZengIWA PublishingWater Supply1606-97491607-07982021-05-0121397198210.2166/ws.2020.374374Water quality index and spatio-temporal perspective of a large Brazilian water reservoirKarla Lorrane de Oliveira0Ramatisa Ladeia Ramos1Sílvia Corrêa Oliveira2Cristiano Christofaro3 Department of Sanitary and Environmental Engineering, Federal University of Minas Gerais, P.O. Box 1294, ZIP 30.270-901, Belo Horizonte, MG, Brazil Department of Sanitary and Environmental Engineering, Federal University of Minas Gerais, P.O. Box 1294, ZIP 30.270-901, Belo Horizonte, MG, Brazil Department of Sanitary and Environmental Engineering, Federal University of Minas Gerais, P.O. Box 1294, ZIP 30.270-901, Belo Horizonte, MG, Brazil Department of Forestry Engineering, Federal University of Jequitinhonha and Mucuri Valleys, P.O. Box 5000, ZIP 39.100-000, Diamantina, MG, Brazil 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.;http://ws.iwaponline.com/content/21/3/971environmental statisticshydroelectric reservoirspatio-temporal perspectivewater quality index |
| spellingShingle | 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 Water Supply environmental statistics hydroelectric reservoir spatio-temporal perspective water quality index |
| title | 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_short | 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 |
| topic | environmental statistics hydroelectric reservoir spatio-temporal perspective water quality index |
| url | http://ws.iwaponline.com/content/21/3/971 |
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