STREAMFLOW REGIONALIZATION IN PIQUIRI RIVER BASIN

ABSTRACT The objective of this study was to regionalize 7-day 10-year low flows, long-term annual mean, and 90% and 95% permanence flows from Piquiri (PR) river basin. The following regionalization methods were adopted: Traditional, Linear interpolation, Chaves, Modified linear interpolation, and Mo...

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Bibliographic Details
Published in:Engenharia Agrícola 2018-01, Vol.38 (1), p.22-31
Main Authors: Araujo, Fernanda C., Mello, Eloy L. de, Gollin, Gisele M., Quadros, Luciana E. de, Gomes, Benedito M.
Format: Article
Language:English
Subjects:
AGRICULTURAL ENGINEERING
average streamflow
flows permanence
low flows
water availability
water resources management
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Summary:ABSTRACT The objective of this study was to regionalize 7-day 10-year low flows, long-term annual mean, and 90% and 95% permanence flows from Piquiri (PR) river basin. The following regionalization methods were adopted: Traditional, Linear interpolation, Chaves, Modified linear interpolation, and Modified Chaves. The equations obtained by the Traditional method, adding main river length or drainage density as independent variables, significantly improved R2 equations value. Streamflow forecasting by Linear Interpolation and Chaves methods were as good as those provided by the Traditional Method, thus, these methods could be applied to Piquiri River basin, especially when drainage area is the only available spatial information.
ISSN:0100-6916
1809-4430
1809-4430
DOI:10.1590/1809-4430-eng.agric.v38n1p22-31/2018