Calibration and validation of a general infiltration model Academic Article uri icon

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.

published proceedings

  • Hydrological Processes

author list (cited authors)

  • Mishra, S. K., Kumar, S. R., & Singh, V. P.

citation count

  • 26

complete list of authors

  • Mishra, Surendra Kumar||Kumar, Shashi Ranjan||Singh, Vijay P

publication date

  • August 1999

publisher