In situ measurements of soil hydraulic conductivity using point application of water

Muluneh Yitayew, A. A. Khan, A. W. Warrick

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A method for estimating hydraulic conductivity from in-situ measurements of soil's hydraulic parameters from a point application of water was tested for three soil types. The method is based on Wooding's (1968) and Warrick's (1985) solutions of water flow from a shallow circular pond and point source, respectively. Measurements of the saturated radii and the associated flow rates are used to determine the saturated hydraulic conductivity and a for the assumed Gardner's (1958) exponential relationship between hydraulic conductivity and soil matric head. Effects of flow rate on saturated and unsaturated surface wetted regimes were also observed. The surface wetted areas were found to be significantly affected by flow rate in all three soils. The results from the point application method were compared to those from ring infiltrometer measurements and gave consistent values for saturated hydraulic conductivity. The method's simplicity, repeatability and the ability to make rapid in-situ measurement makes it practical and applicable to use under varying conditions.

Original languageEnglish (US)
Pages (from-to)115-120
Number of pages6
JournalApplied Engineering in Agriculture
Volume14
Issue number2
StatePublished - Mar 1998

Fingerprint

Hydraulic conductivity
hydraulic conductivity
Soil
Soils
Water
Flow rate
saturated hydraulic conductivity
soil
water
infiltrometers
soil matric potential
Flow of water
Ponds
application methods
repeatability
water flow
soil types
surface area
fluid mechanics
methodology

Keywords

  • Hydraulic conductivity
  • Hydrology
  • Soil

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)

Cite this

In situ measurements of soil hydraulic conductivity using point application of water. / Yitayew, Muluneh; Khan, A. A.; Warrick, A. W.

In: Applied Engineering in Agriculture, Vol. 14, No. 2, 03.1998, p. 115-120.

Research output: Contribution to journalArticle

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