ENVIRONMENTAL CHARACTERIZATION AND MORPHOMETRIC ANALYSIS OF ITAUEIRA RIVER WATER BASIN, PIAUÍ, BRAZIL

Authors

DOI:

https://doi.org/10.26895/geosaberes.v11i0.853

Keywords:

Hydrographic basin, Geoenvironmental characteristics, Morphometry

Abstract

The study aimed to perform geoenvironmental characterization, particularly morphometric, of the Itaueira River Basin, state of Piauí, from geometric variables, drainage network and relief, as a possibility to know the environmental dynamics of the basin. For this purpose it used the Digital Elevation Model (DEM) to calculate the morphometric parameters related to the geometric characteristics, drainage network and relief. Thus, the study indicated that the basin area studied is 10122.4 km2 and a perimeter of 757.03 km2. In turn, the basin has an elongated profile and low predisposition to abrupt flooding, as its compactness coefficient is 2.1068, form factor 0.12 and circularity index of 0.222. The total length of the watercourses is 735.2 km, drainage density 0.073 km/km², hydrographic density 0.0014 and 3rd order river channels. The altitude and average slope found were 371.7 m and 4.81%, respectively, while its roughness index was 44.238.

Author Biographies

  • Amanda Alves Dias, Federal Institute of Piauí (IFPI), Brazil

    Master in Geography from the Federal University of Piauí (UFPI).

  • Cláudia Maria Sabóia de Aquino, Federal University of Piauí (UFPI), Brazil

    Professor of the Postgraduate Program in Geography at the Federal University of Piauí (UFPI).

  • Francílio de Amorim dos Santos, Federal Institute of Education, Science and Technology of Piauí (IFPI), Brazil

    Professor of Basic, Technical and Technological Education at the Federal Institute of Piauí (IFPI).

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Published

2020-04-14

Issue

Vol. 11 (2020): Vol 11 (2020)

Section

Artigos

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How to Cite

ENVIRONMENTAL CHARACTERIZATION AND MORPHOMETRIC ANALYSIS OF ITAUEIRA RIVER WATER BASIN, PIAUÍ, BRAZIL. (2020). Geosaberes, 11, 265-276. https://doi.org/10.26895/geosaberes.v11i0.853