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GR3J: a daily watershed model with three free parameters
- EDIJATNO, DE OLIVEIRA NASCIMENTO, NILO, YANG, XIAOLIU, MAKHLOUF, ZOUBIR, MICHEL, CLAUDE
- Hydrological sciences journal 1999 v.44 no.2 pp. 263-277
- hydrologic models, linear models, watersheds
- This paper describes a new empirical watershed model, the prime feature of which is its parsimony. It involves only three free parameters, a characteristic unparalleled by continuous process models able to work on a wide array of catchments. In spite of its crude simplicity, it achieved, on average, worthwhile results on a set of 140 French catchments and overwhelmingly outperformed a linear model involving 16 parameters. It performed roughly as well as a conceptual model with five free parameters, derived from the well-known TOPMODEL.