Vadose zone permeability tests: unsteady flow.

D. B. Stephens, S. P. Neuman

Research output: Contribution to journalArticlepeer-review

33 Scopus citations


Saturated-unsaturated flow models are used to simulate transient conditions in four soils during constant head borehole infiltration tests in the vadose zone. Infiltration rate varies directly with saturated hydraulic conductivity and is also influenced by unsaturated soil properties, antecedent moisture conditions, anisotropy and borehole conditions. The method recommended by the U.S. Bureau of Reclamation to determine when to terminate a test may lead to overestimating saturated hydraulic conductivity. -from ASCE Publications Abstracts

Original languageEnglish (US)
Pages (from-to)660-677
Number of pages18
JournalJournal of the Hydraulics Division - ASCE
Issue numberHY5
StatePublished - 1982
Externally publishedYes

ASJC Scopus subject areas

  • General Engineering


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