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Water 2011, 3(1), 132-145; doi:10.3390/w3010132

Soil Water Surplus in Salado River Basin and Its Variability during the Last Forty Years (Buenos Aires Province, Argentina)

1,2,* , 3
1 National Council of Scientific and Technical Research, Avenue Rivadavia 5485, Buenos Aires, 1424, Argentina 2 Geography Department, Humanities and Education Sciences Faculty, National University of La Plata, 48 Street, La Plata, Buenos Aires, 1900, Argentina 3 Faculty of Agronomy, University of Buenos Aires, Avenue San Martín 4453, Buenos Aires, 1417, Argentina
* Author to whom correspondence should be addressed.
Received: 11 November 2010 / Accepted: 30 December 2010 / Published: 18 January 2011
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Soil water surplus and deficit occur frequently in Buenos Aires province in Argentina. This paper analyses the soil water surplus in a sub-area, the Salado River basin, in the period 1968–2008. This basin is divided in seven drainage areas, delimitated according to the National Water Resources. The series of soil water surplus data were adjusted by means of the theoretical normal cubic-root probability distribution, and the mean areal soil water surplus value of 300 mm was considered as a threshold above which floods can cause severe damage. An increase in the frequency of extreme events and in their tendency exists during the recent years, coherent with the increase of precipitation recorded in the region. The statistical significance of the results was assessed using the Mann Kendall and MAKESENS tests. The results showed a relevant temporal variability, but did not show significant tendencies.
Keywords: Salado river basin; water budget; flood risk Salado river basin; water budget; flood risk
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Scarpati, O.E.; Spescha, L.B.; Lay, J.A.F.; Capriolo, A.D. Soil Water Surplus in Salado River Basin and Its Variability during the Last Forty Years (Buenos Aires Province, Argentina). Water 2011, 3, 132-145.

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