Morphometric indicators as a management instrument for the Cotia River watershed (SP)
DOI:
https://doi.org/10.14295/holos.v21i2.12442Keywords:
Morphometry. Geotechnology. Water Management. Watershed.Abstract
Given the issues that involve management and scarcity of water resources, this work aims to make the morphometric characterization of the Cotia River Watershed (CRW) - São Paulo (SP). For this purpose, geotechnological techniques and the digital elevation model (MDE) Alos-Palsar were used to determine morphometric parameters and drainage extraction, based on five contribution areas. The results showed that the watershed has an elongated shape and with watercourses of up to 6th order. CRW has a high drainage density, a predominance of relief with an undulating slope (8 to 20%), and dendritic drainage networks. The Cotia River is 35.7 km long and the basin has an area of 251.37 km² and a perimeter of 141.97 km. The parameters of form factor (0.20), circularity index (0.16), compactness coefficient (2.51), and sinuosity index (1.00) showed that the watershed tends to have high surface runoff and low flood probability. Therefore, morphometric indicators can be used in comparative studies between watersheds and identify the most suitable areas for certain land-use types, avoiding negative impacts and assisting in this way, the implementation of environmental management models.Downloads
Published
2021-04-23
How to Cite
Toniolo, B. P., de Oliveira, R. A., Lourenço, R. W., & Silva, D. C. da C. e. (2021). Morphometric indicators as a management instrument for the Cotia River watershed (SP). Holos Environment, 21(2), 282–302. https://doi.org/10.14295/holos.v21i2.12442
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