Drainage, Measurement, Subsoil, Seepage
Throughflow troughs were installed to assess their effectiveness in quantifying shallow sub-surface flows on hillslopes. The majority of flow was found to occur from decayed root channels in clay sub-soils below the lowest gutter. The conclusion at this site is that shallow throughflow troughs installed on a small scale are not capable of quantifying all of the seepage occurring on hillslopes.
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Henschke, C J, and Bessell-Browne, J A. (1985), Throughflow troughs for the measurement of shallow seepage on hillslopes. Department of Agriculture and Food, Western Australia. Report 42.