Data/hora: 20/05/2024 09:16:46

Biblioteca(s): 	Epagri-Sede.	
Tipo da produção científica: 	Artigo em Periódico Indexado	
Circulação/Nível: 	Nacional - B	
Data corrente: 	15/09/2021	
Data da última atualização: 	15/09/2021	
Autoria: 	AGUIAR, A. F. O.; BACK, A. J.; RECIO, M. A. L.; CORSEUIL, C. W.	
Título: 	Maximum flow study by the hydrogram method for a watershed in the south of Santa Catarina, Brazil.	
Ano de publicação: 	2021	
Fonte/Imprenta: 	Revista de Ciências Ambientais, Canoas, v. 15, n. 2, p. 1-18, 2021.	
Idioma: 	Inglês	
Conteúdo: 	Knowing the maximum flow and its return period is extremely important for safely dimension hydraulic projects for flood prediction and control and also water erosion prediction. Thus, this study aimed to evaluate Capivari river watershed maximum flow, located in south of Santa Catarina, that has a flooding history. The method used was &#57442; e United States Soil Conservation Service (SCS) Triangular Unit Hydrogram method (current Natural  Resources Conservation Service), and, for eff ective rainfall, the US Curve Number (SCS-CN) method is used. To estimate the maximum flow in the watershed, three background moisture scenarios (CNI, CNII and CNIII) and six empirical equations proposed for rural watersheds were adopted to calculate the concentration time. To evaluate the observed upstream flow, a 34-years historical series was used, measured at the São Martinho downstream fluviometric station (code 84598002), located in the outlet section of the study watershed. The results showed that the maximum flows estimated by the SCS CN method for the conditions of CNII and CNIII had greater differences (-198% and -287%) compared to the observed flow. The smallest differences were verified for the CNI condition for all the analyzed return periods (2, 5, 10, 15, 20, 25, 50 and 100). Also, it was observed that, the longer is the return period, smaller the difference among the maximum observed and estimated  flows, and, the smallest was verifi ed for the 50- year period, indicating that this is the most appropriate for studies of extreme events in the study watershed.	
Palavras-Chave: 	Eff ective Rainfall; SCS Curve Number; Time of Concentration.	
Categoria do assunto: 	P Recursos Naturais, Ciências Ambientais e da Terra	
URL: 	http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_49862.pdf	
Registro original: 	Epagri-Sede (Epagri-Sede)	
Exemplares: 	Epagri-Sede - (106159-1) - UPC - AP - DD -  -  -  - DIS