Good water management and improved drainage can minimize yield reductions caused by waterlogging and thus increase profitability. Waterlogging became a very severe problem in some of the irrigated fields of Fincha'a Sugar Estate in the Blue Ni Basin of western Ethiopia. As a result many productive agricultural lands were abandoned. A measurement of geoelectrical resistivity at the selected irrigated fields by using Schlumberger array with the space of potential and current electrode was found to be 2 m. The positions of centre sounding measurements to be investigated were at different points along the traverse line (subsurface area). The objective of this study was to identify the depth of the groundwater table in relation to subsurface lithology. The shallow ground water was identified at the depth of 1.5, 2.06, 3.18 and 2.49 m with resistivity values of 3.76, 5.42, 49.3, and 29.4 Ω (VES 2), (VES 3) and (VES 4) respectively. While the deep ground water table confined on the course range from the depth of 3.96 to 11.6 m with the resistivity value of 3.96 to 11.6 Ω-m.The variation of resistivity values from each position of ground water shows the variation of variation of crack dimension and variation of medium type. It was identified that the selected irrigated fields are under severe to critically waterlogged conditions. Deeper regolith (3.18 below the water table, due to low salinities in the groundwater and coarser textures.
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