Morphometric evaluation of watersheds in Caxias do Sul City, Brazil, using SRTM (DEM) data and GIS

Vieceli, Nathália; Bortolin, Taison Anderson; Mendes, Ludmilson Abritta; Bacarim, Gisele; Cemin, Gisele; Schneider, Vânia Elisabete

doi:10.1007/s12665-014-3823-3

Cited by 33 publications

(11 citation statements)

References 7 publications

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“…Assim, variados autores debruçam-se sobre a literatura para embasar suas investigações visando o desenvolvimento de novas metodologias para a identificação de áreas suscetíveis à inundação como, por exemplo, classificação de imagens obtidas após a ocorrência de eventos extremos (LIM; LEE, 2017; ZHANG; ZHU; LIU, 2014), caracterização morfométricas de bacias hidrográficas (SAHARIA et al, 2017;VIECELI et al, 2015) e identificação de áreas suscetíveis com base no modelo digital de elevação (MDE) (MCKENZIE; RUTTER; HULBERT, 2010; OLIVEIRA et al 2018). Entretanto, em grande maioria destas metodologias, as condicionantes não são analisadas de forma conjunta, o que dificulta um entendimento mais completo da espacialização do fenômeno ao longo da bacia hidrográfica.…”

Section: Introductionunclassified

Suscetibilidade à inundação da bacia hidrográfica do rio Piratini - RS

Moura

Araujo²,

Castro

et al. 2020

RBES

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Diversas técnicas vêm sendo desenvolvidas a fim de identificar a suscetibilidade à inundação de uma dada região. Neste contexto, o Sensoriamento Remoto vem sendo utilizado para auxiliar medidas de controle e prevenção de inundações. O estudo tem como objetivo analisar a suscetibilidade da bacia hidrográfica do rio Piratini, localizada no Estado do Rio Grande do Sul. Foi utilizado o método Analytic Hierarchy Process e os atributos analisados foram: declividade, altitude, classe de solo e uso do solo. Dois cenários foram propostos: i) solo exposto e ii) solo com vegetação. Dois cenários foram propostos: i) solo exposto e ii) solo com vegetação. Pode-se perceber que a bacia apresentou maior porcentagem de áreas com baixa e muito baixa suscetibilidade durante o período com cobertura agrícola, enquanto que, a porcentagem da bacia enquadrada com suscetibilidade muito alta duplicou no período com o solo exposto.

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Section: Introductionunclassified

Suscetibilidade à inundação da bacia hidrográfica do rio Piratini - RS

Moura

Araujo²,

Castro

et al. 2020

RBES

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“…Such approaches enhance our understanding of the geomorphic evolution of drainage basins. It was also concluded in the recent past that any significant changes affecting any environmental component of the watershed, will influence other components especially those located downstream, denoting that any natural or anthropogenic geomorphic and hydrologic changes taking place, will instantly affect certain areas, and may spread to other parts of the watershed [40]. The development of powerful and cost-effective GIS and remote sensing techniques enables us to measure, calculate, and process with high accuracy basic, derived, and shape morphometric parameters of drainage basins.…”

Section: Introductionmentioning

confidence: 99%

Morphometric Assessment of Wadi Wala Watershed, Southern Jordan Using ASTER (DEM) and GIS

Farhan¹

2017

JGIS

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Morphometric analysis is of vital concern to understand hydromophological processes in a given watershed, and thus, it is a priority for assessing water resources in drainage basins. A morphometric analysis was conducted to identify the drainage properties of Wadi Wala and the 23 fourth-order subbasins. ASTER DEM data was employed to compile slope, elevation, and aspect maps. Arc GIS software was used to measure and calculate basic, derived and shape morphometric parameters. W. Wala is found to be a sixth-order drainage basin, and the drainage pattern is trellis to sub-trellis in the central and lower part of the catchment, whereas it is dendritic to sub-dendritic pattern in the southern and northern parts. The slopes of the catchment vary from 0˚ -5˚ to >35˚ in slope categories. Tectonic uplifting and tilting, lithology, structure and rejuvenation are the major factors controlling morphological variation over the watershed. The recognized fault systems are chiefly controlling the drainage pattern, and the elongated shape of the sub-basins is attributed to dense lineaments in the central and eastern parts of the watershed. The R b values for the entire catchment and the sub-catchments range from 2 to 7, with a mean of 4.55, which indicates the distortion of drainage pattern by geological structure. Hypsometric integral values are high for the W. Wala watershed and the sub-basins, where it ranges from 70% to 89%. High HI values indicate that drainage basins are at the youth-age stage of geomorphic development, and they are affected by tectonic uplifting, tilting, and the dominance of hillslope process. Variation in HI values is apparent between sub-basins located at the western part, or, the rejuvenated belt where HI values range from 85% to 89%. Whereas the HI values of the sub-basins located at the eastern part of the watershed, vary from 70% to 84%. Regression analysis reveals that R 2 values, which represent the degree of control of driving pa- Y. Farhan respectively (where the F-value is significant at 0.1% and 0.5% levels). Such results imply that the height of local base level (m), and the mean height (m) are the only morphometric driving parameters which have significant control on HI values in the W. Wala watershed. High annual soil loss and sediment load estimated recently, denote that the catchment is highly susceptible to surface erosion at present. Hence, the present study, and the resultant information would help to plan for efficient soil and water conservation measures to reduce soil erosion rates, conserve water, and to control sediment into W. Wala dam.

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“…Morphometric research is a quantitative technique for analyzing the land surface features. The detailed study of watershed supports and its proper management, allowing the individualization of its characteristics and evolving the best practices for the conservation of the assets that are within its territory (Banerjee et al 2015;Vieceli et al 2015). Water management studies are important for protecting the limited water resources, because at most of the places, surface water resources are rare, and at some places, it is totally absent (Sreedevi et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Geospatial tool-based morphometric analysis using SRTM data in Sarabanga Watershed, Cauvery River, Salem district, Tamil Nadu, India

Arulbalaji

Gurugnanam

2017

Appl Water Sci

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A morphometric analysis of Sarabanga watershed in Salem district has been chosen for the present study. Geospatial tools, such as remote sensing and GIS, are utilized for the extraction of river basin and its drainage networks. The Shuttle Radar Topographic Mission (SRTM-30 m resolution) data have been used for morphometric analysis and evaluating various morphometric parameters. The morphometric parameters of Sarabanga watershed have been analyzed and evaluated by pioneer methods, such as Horton and Strahler. The dendritic type of drainage pattern is draining the Sarabanga watershed, which indicates that lithology and gentle slope category is controlling the study area. The Sarabanga watershed is covered an area of 1208 km 2 . The slope of the watershed is various from 10 to 40% and which is controlled by lithology of the watershed. The bifurcation ratio ranges from 3 to 4.66 indicating the influence of geological structure and suffered more structural disturbances. The form factor indicates elongated shape of the study area. The total stream length and area of watershed indicate that mean annual rainfall runoff is relatively moderate. The basin relief expressed that watershed has relatively high denudation rates. The drainage density of the watershed is low indicating that infiltration is more dominant. The ruggedness number shows the peak discharges that are likely to be relatively higher. The present study is very useful to plan the watershed management.

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Morphometric evaluation of watersheds in Caxias do Sul City, Brazil, using SRTM (DEM) data and GIS

Cited by 33 publications

References 7 publications

Suscetibilidade à inundação da bacia hidrográfica do rio Piratini - RS

Suscetibilidade à inundação da bacia hidrográfica do rio Piratini - RS

Morphometric Assessment of Wadi Wala Watershed, Southern Jordan Using ASTER (DEM) and GIS

Geospatial tool-based morphometric analysis using SRTM data in Sarabanga Watershed, Cauvery River, Salem district, Tamil Nadu, India

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