This case study determines the most likely rate of return to capital invested in constructing seepage interceptor drains to reduce the effect of waterlogging on crop and pasture yields. The analysis of a farm in the Denbarker region, west of Albany, determined what increases were needed in pasture growth to justify the cost of constructing drains across four adjacent paddocks. The benefits of changing rotations to include lupins were also determined, as growing lupins was unprofitable before the construction of drains.
Bathgate, Andrew and Evans, Ian
"Economics of interceptor drains : a case study,"
Journal of the Department of Agriculture, Western Australia, Series 4: Vol. 31
, Article 12.
Available at: http://researchlibrary.agric.wa.gov.au/journal_agriculture4/vol31/iss2/12