RELATIONSHIP BETWEEN THE STREAMFLOWS AND PRECIPITATIONS IN ITAPEMIRIM RIVER BASIN | Zendy

Natália Gomes de Souza Mendes | Zendy; Roberto Avelino Cecílio | Zendy; Sidney Sára Zanetti | Zendy; Cleber Assis dos Santos | Zendy

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RELATIONSHIP BETWEEN THE STREAMFLOWS AND PRECIPITATIONS IN ITAPEMIRIM RIVER BASIN

Author(s) -

Natália Gomes de Souza Mendes,

Roberto Avelino Cecílio,

Sidney Sára Zanetti,

Cleber Assis dos Santos

Publication year - 2019

Publication title -

floresta

Language(s) - English

Resource type - Journals

eISSN - 1982-4688

pISSN - 0015-3826

DOI - 10.5380/rf.v49i2.53994

Subject(s) - streamflow , drainage basin , watershed , structural basin , environmental science , hydrology (agriculture) , series (stratigraphy) , stream flow , climatology , geology , geography , geomorphology , paleontology , cartography , geotechnical engineering , machine learning , computer science

ThThe present paper analyzed the relationship between streamflow and rainfall at the stream of Itapemirim River Watershed (BHRI). The minimum streamflow with duration of seven days (Q 7 ), the average annual streamflow (Q med ) and the annual maximum streamflow (Q max ) of 11 BHRI’s sub-basins were determined. Trends in rainfall and streamflow series were analyzed with Mann-Kandall and Pettitt nonparametric tests. Regression analysis between rainfall and streamflow were established. Results showed no trends on rainfall and Q 7 series. Trends in Q med were found only at one sub-basin and trends in Q max were found in two sub-basins. The total rainfall was correlated with the streamflow of all the sub-basins. It has been found that annual rainfall amount (Pa) explained considerably variations in Q med and Q 7 . Rainfall amounts of the rainiest month (P max ) showed good correlation to Q max .

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