Natural vulnerability of water resources in the Formoso River basin, Northern Brazil

dc.creatorOliveira, Tamires Alves
dc.creatorViola, Marcelo Ribeiro
dc.creatorMello, Carlos Rogerio de
dc.creatorGiongo, Marcos
dc.creatorCoelho, Gilberto
dc.date2017-09-04T16:50:02Z
dc.date2017-09-04T16:50:02Z
dc.date2015-03-05
dc.date.accessioned2023-09-28T20:06:56Z
dc.date.available2023-09-28T20:06:56Z
dc.identifierOLIVEIRA, T. A. et al. Natural vulnerability of water resources in the Formoso River basin, Northern Brazil. African Journal of Agricultural Research, [S. l.], v. 10, n. 10, p. 1107-1114, Mar. 2015.
dc.identifierrepositorio.ufla.br/jspui/handle/1/15330
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9044811
dc.descriptionThe natural vulnerability characterization provides fundamental support for identification of areas more susceptible from the hydrology point of view, assuring the maintenance of water resource features. In this context, this study aimed to characterize the natural vulnerability of water resources based on long-term streamflows, base flow and aquifers’ susceptibility to contamination, for Formoso River basin, located in southwestern Tocantins. For that, subdivision by level 5 Ottobasins and discharge and precipitation data sets, both available from the “Brazilian National Water Agency”, and the geological map developed by “Tocantins State Bureau of Planning” (SEPLAN) were used. The final natural vulnerability of water resources presented degrees varying from low to very high. Areas with lower vulnerability were observed in the basin headwaters, mainly due to the greatest both long-term (SYqlt) and 90% of the exceedance (SY90%) specific discharges. “High” vulnerability were identified in most of the middle basin course while “Very High” vulnerability in the lower basin course given by lower SYqlt and SY90% and by the occurrence of the alluvial aquifers which present high natural susceptibility to contamination.
dc.formatapplication/pdf
dc.languageen_US
dc.publisherAcademic Journals
dc.rightsAttribution 4.0 International
dc.rightsacesso aberto
dc.rightshttp://creativecommons.org/licenses/by/4.0/
dc.sourceAfrican Journal of Agricultural Research
dc.subjectWatersheds – Formoso River, State of Tocantins, Brazil
dc.subjectWater resources – Contamination
dc.subjectStreamflow
dc.subjectAquifers
dc.subjectBacias hidrográficas – Rio Formoso, Tocantins
dc.subjectRecursos hídricos – Contaminação
dc.subjectVazões naturais
dc.subjectAquíferos
dc.titleNatural vulnerability of water resources in the Formoso River basin, Northern Brazil
dc.typeArtigo


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