ISSN:
1475-2743
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Geosciences
,
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract. The prediction of water-table levels from groundwater theory for a drainage system in a uniform homogeneous soil was tested in an existing field system. Specially designed meters recorded water-table heights and drain discharge with time. A comprehensive hydraulic conductivity survey was made below the water table.The results agreed with theory for water-table heights up to about 300 mm above the mean drain level. The drainage above that level was larger than predicted, either because of an increased hydraulic conductivity (which could have been produced by subsoiling the previous year and would not have been picked up by die hydraulic conductivity measurements), or because of the presence of an older shallower lateral drainage system, broken and blocked, that was discovered during the work.Attention is drawn to the inadequacies of dip-wells for monitoring rapid changes in water-table levels and to the problem of sample size in hydraulic conductivity measurements, which if too small can lead to apparent variability.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1475-2743.1986.tb00677.x
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