A derived PDF for the initial soil moisture in a catchment

Juan B. Valdés, Mario Díaz-Granados, Rafael L. Bras

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The probability distribution of the initial soil moisture concentration of a catchment was derived based on the one-dimensional infiltration-exfiltration process of a layer of soil. Analytical expressions were found for the initial and final soil moisture concentration during a storm event. These analytical expressions were then used in simulation experiments for different combinations of climate and soil characteristics to evaluate the average soil moisture concentration at the beginning of a storm and its variance. A beta PDF was then fitted to completely characterize its probability distribution. Finally, a general expression for both the mean and the variance of the initial soil moisture is given based only on climate and soil characteristics.

Original languageEnglish (US)
Pages (from-to)163-176
Number of pages14
JournalJournal of Hydrology
Issue number1-4
StatePublished - Feb 1990
Externally publishedYes

ASJC Scopus subject areas

  • Water Science and Technology


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