Flow distribution and trends in the Das Velhas River Basin
In the management of water resources, it is necessary to balance the demands of multiple uses of water and water availability, while enabling use in an environmentally sustainable way. Probability distributions of flow rates are essential tools for assessing water availability. The objectives of thi...
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| Format: | Article |
| Language: | English |
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Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHi)
2019-06-01
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| Series: | Revista Ambiente & Água |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1980-993X2019000300310&lng=en&nrm=iso&tlng=en |
| _version_ | 1819062429020061696 |
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| author | Larissa Silva Melo João Carlos Ferreira Borges Júnior Ana Paula Coelho Madeira Silva |
| author_facet | Larissa Silva Melo João Carlos Ferreira Borges Júnior Ana Paula Coelho Madeira Silva |
| author_sort | Larissa Silva Melo |
| collection | DOAJ |
| description | In the management of water resources, it is necessary to balance the demands of multiple uses of water and water availability, while enabling use in an environmentally sustainable way. Probability distributions of flow rates are essential tools for assessing water availability. The objectives of this work were to analyze the best probability distribution that conforms to the annual minimum daily average discharge for periods of seven consecutive days (Q7) for 14 stream gauging stations in the Das Velhas River Basin and to identify possible trends in Q7 time series and in bi monthly and annual sets of daily discharges in three key stream gauging stations. The quality of fit was verified by the Anderson-Darling test (A-D). The selection of the models that presented the best fit was done according to the Bayesian Information Criterion (BIC). The Mann-Kendall test was used to verify trends in time series of discharge. In general, better measures of quality of fit were obtained for the probability distributions Gumbel and Rayleigh. Negative trends in discharge distributions were verified in the three stations. For the Várzea da Palma station, the closest to the river mouth, negative and significant trends were found for the Q7 data and daily average discharge for every bimester except the first. |
| first_indexed | 2024-12-21T14:58:38Z |
| format | Article |
| id | doaj.art-fde81fb3103147abb5c5265fad7e6eaf |
| institution | Directory Open Access Journal |
| issn | 1980-993X |
| language | English |
| last_indexed | 2024-12-21T14:58:38Z |
| publishDate | 2019-06-01 |
| publisher | Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHi) |
| record_format | Article |
| series | Revista Ambiente & Água |
| spelling | doaj.art-fde81fb3103147abb5c5265fad7e6eaf2022-12-21T18:59:41ZengInstituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHi)Revista Ambiente & Água1980-993X2019-06-0114311910.4136/ambi-agua.2289Flow distribution and trends in the Das Velhas River BasinLarissa Silva Melo0João Carlos Ferreira Borges Júnior1Ana Paula Coelho Madeira Silva2Universidade Federal de São João del-Rei (UFSJ), Sete Lagoas, MG, Brasil Departamento de Ciências Agrárias (DCIAG). Universidade Federal de São João del-Rei (UFSJ), Sete Lagoas, MG, Brasil Departamento de Ciências Agrárias (DCIAG). Universidade Federal de São João del-Rei (UFSJ), Sete Lagoas, MG, Brasil Departamento de Ciências Exatas e Biológicas (DECEB). In the management of water resources, it is necessary to balance the demands of multiple uses of water and water availability, while enabling use in an environmentally sustainable way. Probability distributions of flow rates are essential tools for assessing water availability. The objectives of this work were to analyze the best probability distribution that conforms to the annual minimum daily average discharge for periods of seven consecutive days (Q7) for 14 stream gauging stations in the Das Velhas River Basin and to identify possible trends in Q7 time series and in bi monthly and annual sets of daily discharges in three key stream gauging stations. The quality of fit was verified by the Anderson-Darling test (A-D). The selection of the models that presented the best fit was done according to the Bayesian Information Criterion (BIC). The Mann-Kendall test was used to verify trends in time series of discharge. In general, better measures of quality of fit were obtained for the probability distributions Gumbel and Rayleigh. Negative trends in discharge distributions were verified in the three stations. For the Várzea da Palma station, the closest to the river mouth, negative and significant trends were found for the Q7 data and daily average discharge for every bimester except the first.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1980-993X2019000300310&lng=en&nrm=iso&tlng=enMann-Kendallmodel selectionwater resources |
| spellingShingle | Larissa Silva Melo João Carlos Ferreira Borges Júnior Ana Paula Coelho Madeira Silva Flow distribution and trends in the Das Velhas River Basin Revista Ambiente & Água Mann-Kendall model selection water resources |
| title | Flow distribution and trends in the Das Velhas River Basin |
| title_full | Flow distribution and trends in the Das Velhas River Basin |
| title_fullStr | Flow distribution and trends in the Das Velhas River Basin |
| title_full_unstemmed | Flow distribution and trends in the Das Velhas River Basin |
| title_short | Flow distribution and trends in the Das Velhas River Basin |
| title_sort | flow distribution and trends in the das velhas river basin |
| topic | Mann-Kendall model selection water resources |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1980-993X2019000300310&lng=en&nrm=iso&tlng=en |
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