Dry spells and their impacts on reservoir inflow in semiarid regions: hypothesis outline in a case study of Orós hydrographic basin, Ceará, Brazil
ABSTRACT The occurrence of subseasonal phenomena, such as dry spells and flash droughts, are potentially detrimental to the agricultural sector and water resources. The impacts on agricultural sector have been well explored by the technical-scientific community, attesting to the importance of subsea...
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Associação Brasileira de Recursos Hídricos
2025-08-01
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| Series: | Revista Brasileira de Recursos Hídricos |
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| author | Carlos Eduardo Sousa Lima Cleiton da Silva Silveira Francisco das Chagas Vasconcelos Júnior |
| author_facet | Carlos Eduardo Sousa Lima Cleiton da Silva Silveira Francisco das Chagas Vasconcelos Júnior |
| author_sort | Carlos Eduardo Sousa Lima |
| collection | DOAJ |
| description | ABSTRACT The occurrence of subseasonal phenomena, such as dry spells and flash droughts, are potentially detrimental to the agricultural sector and water resources. The impacts on agricultural sector have been well explored by the technical-scientific community, attesting to the importance of subseasonal variability for this sector, especially for low-tech farming areas. However, when it comes to water resources, there is a large gap regarding the hydrological impacts of these phenomena, in a way that pertinent questions about the importance of subseasonal variability for water resources management remain still unexplored or poorly understood. This study evaluated the impacts of dry spells on reservoir inflow in semiarid regions, taking the Orós reservoir (Northeast Brazil) as a case study. The relationship between the dry spell index and the inflow of Orós reservoir during the rainy season was analyzed, as well as the daily time series of precipitation and storage volume during two long-term dry spells. The two formulated hypotheses suggest that dry spells are indeed capable of reducing the reservoir inflow efficiency in semiarid regions during rainy seasons. These hypotheses serve as a starting point for a deeper discussion on the impacts of dry spells on water resource management in arid and semiarid regions. |
| format | Article |
| id | doaj-art-c8adb3beb2bd4c2db2347abcc2b95603 |
| institution | Kabale University |
| issn | 2318-0331 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Associação Brasileira de Recursos Hídricos |
| record_format | Article |
| series | Revista Brasileira de Recursos Hídricos |
| spelling | doaj-art-c8adb3beb2bd4c2db2347abcc2b956032025-08-20T03:44:17ZengAssociação Brasileira de Recursos HídricosRevista Brasileira de Recursos Hídricos2318-03312025-08-013010.1590/2318-0331.302520240131Dry spells and their impacts on reservoir inflow in semiarid regions: hypothesis outline in a case study of Orós hydrographic basin, Ceará, BrazilCarlos Eduardo Sousa Limahttps://orcid.org/0000-0003-2199-3382Cleiton da Silva Silveirahttps://orcid.org/0000-0003-3303-5157Francisco das Chagas Vasconcelos Júniorhttps://orcid.org/0000-0002-1558-8383ABSTRACT The occurrence of subseasonal phenomena, such as dry spells and flash droughts, are potentially detrimental to the agricultural sector and water resources. The impacts on agricultural sector have been well explored by the technical-scientific community, attesting to the importance of subseasonal variability for this sector, especially for low-tech farming areas. However, when it comes to water resources, there is a large gap regarding the hydrological impacts of these phenomena, in a way that pertinent questions about the importance of subseasonal variability for water resources management remain still unexplored or poorly understood. This study evaluated the impacts of dry spells on reservoir inflow in semiarid regions, taking the Orós reservoir (Northeast Brazil) as a case study. The relationship between the dry spell index and the inflow of Orós reservoir during the rainy season was analyzed, as well as the daily time series of precipitation and storage volume during two long-term dry spells. The two formulated hypotheses suggest that dry spells are indeed capable of reducing the reservoir inflow efficiency in semiarid regions during rainy seasons. These hypotheses serve as a starting point for a deeper discussion on the impacts of dry spells on water resource management in arid and semiarid regions.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312025000100232&tlng=enDry spellSemi-aridReservoir inflowSubseasonal variability |
| spellingShingle | Carlos Eduardo Sousa Lima Cleiton da Silva Silveira Francisco das Chagas Vasconcelos Júnior Dry spells and their impacts on reservoir inflow in semiarid regions: hypothesis outline in a case study of Orós hydrographic basin, Ceará, Brazil Revista Brasileira de Recursos Hídricos Dry spell Semi-arid Reservoir inflow Subseasonal variability |
| title | Dry spells and their impacts on reservoir inflow in semiarid regions: hypothesis outline in a case study of Orós hydrographic basin, Ceará, Brazil |
| title_full | Dry spells and their impacts on reservoir inflow in semiarid regions: hypothesis outline in a case study of Orós hydrographic basin, Ceará, Brazil |
| title_fullStr | Dry spells and their impacts on reservoir inflow in semiarid regions: hypothesis outline in a case study of Orós hydrographic basin, Ceará, Brazil |
| title_full_unstemmed | Dry spells and their impacts on reservoir inflow in semiarid regions: hypothesis outline in a case study of Orós hydrographic basin, Ceará, Brazil |
| title_short | Dry spells and their impacts on reservoir inflow in semiarid regions: hypothesis outline in a case study of Orós hydrographic basin, Ceará, Brazil |
| title_sort | dry spells and their impacts on reservoir inflow in semiarid regions hypothesis outline in a case study of oros hydrographic basin ceara brazil |
| topic | Dry spell Semi-arid Reservoir inflow Subseasonal variability |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312025000100232&tlng=en |
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