MODELING OF FLOW OF THE MILIANE RIVER USING THE CEQUEAU MODEL

Citation
M. Ayadi et Z. Bargaoui, MODELING OF FLOW OF THE MILIANE RIVER USING THE CEQUEAU MODEL, Hydrological sciences journal, 43(5), 1998, pp. 741-758
Citations number
11
Categorie Soggetti
Water Resources
ISSN journal
02626667
Volume
43
Issue
5
Year of publication
1998
Pages
741 - 758
Database
ISI
SICI code
0262-6667(1998)43:5<741:MOFOTM>2.0.ZU;2-S
Abstract
The objective of this work is to apply the CEQUEAU model to reconstitu te the daily and monthly mean flows in four hydrometric stations in th e River Miliane watershed as well as the daily mean levels in the Bir Mcherga dam. During the calibration period (1972/1973-1974/1975), the daily mean flows are reconstituted with a Nash coefficient varying bet ween 0.88 and 0.97. The relative bias obtained ranged between -2.3 and -4.7%. For the extreme flows, however, the bias values are greater. T he analysis of residual series shows that the residuals are homogeneou s. Residuals are not serially independent, but they are spatially inde pendent. During the validation period (1975/1976-1976/1977), correlati on and Nash coefficients were degraded for the two remaining stations in operation (0.71 and 0.89). The mean relative bias values varied bet ween -3.7 and +5.5%.