Water demand prospects for irrigation in the São Francisco River: Brazilian public policy.

Abstract. This study analyzed how irrigation expansion in the São Francisco Hydrographic Region (SFRH) could affect water availability in four physiographic regions: Upper, Middle, sub-Middle, and Lower SFRH. The Brazilian National Water Resources Plan (PNRH) is the main policy for water resources in Brazil. The PNRH, however, did not evaluate how the expansion of the irrigated area could affect water demand. We use a detailed computable general equilibrium model (CGE), applicable to Brazil, to simulate expansion scenarios in irrigated areas for 2025 and 2035, according to the Water Resources Plan for the São Francisco River (SFP). Simulations were carried out for areas deemed potentially suitable for irrigation. The Climatic Water Balance (CWB) was estimated for the SFRH to compare water supply and water demand. Results suggest that cities located in the Upper and Middle São Francisco Regions would present greater irrigation potential due to water availability and proximity to large irrigated areas. The comparative result of the CWB and the CGE model show water availability problems in the states of Alagoas and Pernambuco, in particular, cities located in the São Francisco Lower Region.

Bibliographic Details

Main Authors:	FERRARINI, A. dos S. F., FERREIRA FILHO, J. B. de S., CUADRA, S. V., VICTORIA, D. de C.
Other Authors:	ANGEL DOS SANTOS FACHINELLI FERRARINI, UFMT; JOAQUIM BENTO DE SOUZA FERREIRA FILHO, Esalq/USP; SANTIAGO VIANNA CUADRA, CPACT; DANIEL DE CASTRO VICTORIA, CNPTIA.
Format:	Artigo de periódico biblioteca
Language:	Ingles English
Published:	2020-04-24
Subjects:	Rio São Francisco, Demanda de água, General equilibrium, Water demand, São Francisco River, Irrigação, Simulação, Irrigation,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1121831 https://doi.org/10.2166/wp.2020.215
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