ASSESSMENT OF THE WATER VOLUME STORAGE IN RESERVOIRS FROM THE BRAZILIAN SEMIARID REGIONS

Authors

  • Pedro Luiz Becaro Crioni Universidade Estadual Paulista
  • Caroline Favoreto da Cunha Universidade Estadual Paulista
  • Elias Hideo Teramoto Universidade Estadual Paulista
  • Hung Kiang Chang Universidade Estadual Paulista

DOI:

https://doi.org/10.14393/RCG249262923

Keywords:

Small water reservoirs, Water Remote Sensing, Water availability, NDWI, Area-volume model

Abstract

Semiarid regions comprise a significant portion of the Earth and they are characterized by lack of water resources. Due to low water availability, surface water is commonly stored in small reservoirs that serve as a primary source of water supply and agriculture. The water volume stored in these reservoirs may be estimated by use of area-volume model,  which estimates the volume per  flooded area of the reservoir. The area of reservoirs can be easily estimated by computation of Normalized Difference Water Index (NDWI) using satellite imagery. Because of the vital importance of water availability estimation in small to medium reservoirs (0.1 to 15 Km2) of the  Brazilian semiarid region, the suitability of some previous area-volume models developed for semiarid was evaluated. Additionally, a new area-volume model valid for the Brazilian semiarid region was developed using non-linear regressions. The fitted model provides estimates close to the measured volumes, indicating the ability of these models to predict the volume of water in these reservoirs.  The proposed model was applied to evaluate the change of stored water in a watershed in the Brazilian semiarid region, allowing to verify a substantial reduction in the water volume during a prolonged drought. Consequently, this work points out useful strategies to monitor the water availability in the Brazilian semiarid region.

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Author Biographies

Pedro Luiz Becaro Crioni, Universidade Estadual Paulista

Graduated in geography with emphasis on environmental analysis and geoprocessing from Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP). Currently linked to LEBAC (Basin Study Laboratory), located at the São Paulo State University Júlio de Mesquita Filho, Campus of Rio Claro, SP.

Caroline Favoreto da Cunha, Universidade Estadual Paulista

Undergraduate in geology at the Universidade Estadual Paulista (UNESP).

Elias Hideo Teramoto, Universidade Estadual Paulista

Graduated in Geology from Universidade Estadual Paulista Júlio de Mesquita Filho, Master in Geosciences and Environment from Universidade Estadual Paulista and PhD in Geosciences and Environment from Universidade Estadual Paulista. Currently is a researcher linked to LABAC (Basin Study Laboratory), located at the São Paulo State University Júlio de Mesquita Filho, Campus of Rio Claro, SP.

Hung Kiang Chang, Universidade Estadual Paulista

Graduated in Geology - Institute of Geosciences - USP (1974), Master in Geology - Northwestern University (1978) and PhD in Geology - Northwestern University (1983). Full Professor - UNESP (1997).

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Published

2023-04-04

How to Cite

CRIONI, P. L. B.; CUNHA, C. F. da; TERAMOTO, E. H.; CHANG, H. K. ASSESSMENT OF THE WATER VOLUME STORAGE IN RESERVOIRS FROM THE BRAZILIAN SEMIARID REGIONS. Caminhos de Geografia, Uberlândia, v. 24, n. 92, p. 57–70, 2023. DOI: 10.14393/RCG249262923. Disponível em: https://seer.ufu.br/index.php/caminhosdegeografia/article/view/62923. Acesso em: 25 nov. 2024.

Issue

Vol. 24 No. 92 (2023): Abril

Section

Artigos

License

Copyright (c) 2023 Pedro Luiz Becaro Crioni, Caroline Favoreto da Cunha, Elias Hideo Teramoto, Hung Kiang Chang

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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