Evaluating a multi-level subsurface drainage system for improved drainage water quality

Author(s)
Hornbuckle, John
Christen, Evan W
Faulkner, Richard David
Publication Date
2007
Abstract
This paper describes a multi-level drainage system, designed to improve drainage water quality. Results are presented from a field scale land reclamation experiment implemented in the Murrumbidgee Irrigation Area of New South Wales, Australia. A traditional single level drainage system and a multi-level drainage system were compared in the experiment in an irrigated field setting. The single level drainage system consisted of 1.8 m deep drains at 20 m spacing. This configuration is typical of subsurface drainage system design used in the area. The multi-level drainage system consisted of shallow closely spaced drains (3.3 m spacing at 0.75 m depth) underlain by deeper widely spaced drains (20 m spacing at 1.8 m depth). Data on drainage flows and salinity, water table regime and soil salinity were collected over a 2-year period. Comparisons of water and solute movement between the multi-level drainage system and a single level drainage system are presented. Differences in the performance of the multi-level and single level drainage systems were found in the water table regime, drain water salinity and soil salinity.
Citation
Agricultural Water Management, 89(3), p. 208-216
ISSN
1873-2283
0378-3774
Link
Publisher
Elsevier BV
Title
Evaluating a multi-level subsurface drainage system for improved drainage water quality
Type of document
Journal Article
Entity Type
Publication

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