Hydrology and Earth System Sciences
www.hydrol-earth-syst-sci.net
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2007
10.5194/hess-11-1825-2007
http://www.hydrol-earth-syst-sci.net/11/1825/2007/
http://www.hydrol-earth-syst-sci.net/11/1825/2007/hess-11-1825-2007.html
http://www.hydrol-earth-syst-sci.net/11/1825/2007/hess-11-1825-2007.pdf
1825
1829
2007-11-26
Technical Note: Determination of the SCS initial abstraction ratio in an experimental watershed in Greece
E. A. Baltas
baltas@agro.auth.gr
N. A. Dervos
M. A. Mimikou
Dept. of Hydraulics, Soil Science and Agricultural Engineering School of Agriculture, Aristotle Univ. of Thessaloniki, 54006 Thessaloniki, Greece
Dept. of Water Resources and Environmental Engineering, National Technical Univ. of Athens, Athens, Greece
The present study was conducted in an experimental watershed in Attica,
Greece, using observed rainfall/runoff events. The objective of the study
was the determination of the initial abstraction ratio of the watershed. The
average ratio (<i>Ia/S</i>) of the entire watershed was equal to 0.014. The
corresponding ratio at a subwatershed was 0.037. The difference was
attributed to the different spatial distribution of landuses and geological
formations at the extent of the watershed. Both of the determined ratios are
close to the ratio value of 0.05 that has been suggested from many studies
for the improvement of the SCS-CN method.
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