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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/14985
Title: Calibration and validation of a general infiltration model
Authors: Mishra S.K.
Kumar S.R.
Singh V.P.
Published in: Hydrological Processes
Abstract: A general infiltration model proposed by Singh and Yu (1990) was calibrated and validated using a split sampling approach for 191 sets of infiltration data observed in the states of Minnesota and Georgia in the USA. Of the five model parameters, f(c) (the final infiltration rate), S(o) (the available storage space) and exponent 'n' were found to be more predictable than the other two parameters: m (exponent) and a (proportionality factor). A critical examination of the general model revealed that it is related to the Soil Conservation Service (1956) curve number (SCS-CN) method and its parameter S(o) is equivalent to the potential maximum retention of the SCS-CN method and is, in turn, found to be a function of soil sorptivity and hydraulic conductivity. The general model was found to describe infiltration rate with time varying curve number.A general infiltration model proposed by Singh and Yu (1990) was calibrated and validated using a split sampling approach for 191 sets of infiltration data observed in the states of Minnesota and Georgia in the USA. Of the five model parameters, fc (the final infiltration rate), So (the available storage space) and exponent 'n' were found to be more predictable than the other two parameters: m (exponent) and a (proportionality factor). A critical examination of the general model revealed that it is related to the Soil Conservation Service (1956) curve number (SCS-CN) method and its parameter So is equivalent to the potential maximum retention of the SCS-CN method and is, in turn, found to be a function of soil sorptivity and hydraulic conductivity. The general model was found to describe infiltration rate with time varying curve number.
Citation: Hydrological Processes (1999), 13(11): 1691-1718
URI: https://doi.org/10.1002/(SICI)1099-1085(19990815)13:11<1691
http://repository.iitr.ac.in/handle/123456789/14985
Issue Date: 1999
Publisher: John Wiley & Sons Ltd, Chichester, United Kingdom
Keywords: Calibration
Curve number
Hydraulic conductivity
Infiltration model
SCS-CN method
Sorptivity
Split sampling
Validation
ISSN: 8856087
Author Scopus IDs: 55463271000
55500535800
57211219633
Author Affiliations: Mishra, S.K., National Institute of Hydrology, Roorkee-247667, U.P., India
Kumar, S.R., National Institute of Hydrology, Roorkee-247667, U.P., India
Singh, V.P., Dept. of Civ. and Environ. Eng., Louisiana State University, Baton Rouge, LA 70803-6405, United States
Corresponding Author: Singh, V.P.; Dept. of Civ. and Environmental Eng., Louisiana State University, Baton Rouge, LA 70803-6405, United States
Appears in Collections:Journal Publications [WR]

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