Standard Article

76 Models for Indirect Estimation of Soil Hydraulic Properties

Part 6. Soils

  1. Marcel G Schaap

Published Online: 15 APR 2006

DOI: 10.1002/0470848944.hsa078

Encyclopedia of Hydrological Sciences

Encyclopedia of Hydrological Sciences

How to Cite

Schaap, M. G. 2006. Models for Indirect Estimation of Soil Hydraulic Properties. Encyclopedia of Hydrological Sciences. 6:76.

Author Information

  1. University of California, Department of Environmental Sciences, Riverside, CA, US

Publication History

  1. Published Online: 15 APR 2006


This article describes methods for the indirect estimation of soil hydraulic properties, such as soil water retention and hydraulic conductivity characteristics. Indirect methods can be classified into semiphysical methods that are based on mechanical assumptions regarding particle and pore arrangements, and statistical methods that are known as pedotransfer functions. Both classes are described and evaluated on their merits, and some characteristic examples are given. A list of applicable software is described at the end of the article and an extensive reference list provides sufficient material for further background information.


  • soil hydraulic properties;
  • pedotransfer functions;
  • estimation