Abstract
Installation of shallow drainage systems (mole drainage, gravel mole drainage, and subsoiling connected to an underlying tile drainage system) is common in fine-textured grassland soils. The performance and efficiency of these systems are known to vary, and a greater understanding of these criteria is needed. This study analyzed shallow drainage systems installed on four sites in southwest Ireland, namely Doonbeg (DG), Athea (AA), Castleisland 1 (C1), and Castleisland 2 (C2), across two high-rainfall periods (8 months in 2015–2016 and 5 months in 2017). Discharge characteristics in terms of peak flow rate, total discharge, and discharge hydrographs were analyzed. All drainage systems were responsive to rainfall events, but efficiency varied both temporally and between systems.
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