Article (Scientific journals)
Technical note: An operational implementation of recursive digital filter for baseflow separation
Rammal, Mohamad; Archambeau, Pierre; Erpicum, Sébastien et al.
2018In Water Resources Research, 54 (10), p. 8528-8540
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Keywords :
Baseflow; optimization; conductance mass balance; objective function; recursive digital filter; recession rate
Abstract :
[en] Baseflow estimation is of overwhelming importance in hydrological modelling and water resources management. One of the widely used techniques to derive baseflow from measured stream flow is the Recursive Digital Filter (RDF). Yet its application still raises methodological issues related to the determination of its parameters. In this study, we propose a practical and automatic procedure to calibrate the RDF with respect to the measured stream flow. The method operationality and robustness are first demonstrated on three gauging stations in the Ourthe catchment (Belgium). The calibrated parameters compare well with those obtained by a standard graphical approach. Next, the proposed approach is compared to the technique of Conductance Mass Balance (CMB) for two gauging stations in the Hoyoux catchment (Belgium). A fair agreement between the results of the two techniques is obtained, suggesting that the proposed automatic calibration procedure of RDF takes the baseflow separation process to a higher level of practicality and transparency.
Research center :
UEE - Urban and Environmental Engineering - ULiège
Disciplines :
Civil engineering
Author, co-author :
Rammal, Mohamad ;  Université de Liège - ULiège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Archambeau, Pierre  ;  Université de Liège - ULiège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Erpicum, Sébastien  ;  Université de Liège - ULiège > Scientifiques attachés au Doyen (Sc.appliquées)
Orban, Philippe  ;  Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Brouyère, Serge  ;  Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Pirotton, Michel ;  Université de Liège - ULiège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Dewals, Benjamin  ;  Université de Liège - ULiège > Département ArGEnCo > Hydraulics in Environmental and Civil Engineering
Language :
English
Title :
Technical note: An operational implementation of recursive digital filter for baseflow separation
Publication date :
2018
Journal title :
Water Resources Research
ISSN :
0043-1397
eISSN :
1944-7973
Publisher :
Wiley, Hoboken, United States - New Jersey
Volume :
54
Issue :
10
Pages :
8528-8540
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
FloodLand
Available on ORBi :
since 25 September 2018

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