In one of NTPC’s plant, 64 m high dyke embankment was necessitated in ash pond of 850 acres. Raising of dyke to such heights with upstream method is unsafe as higher raising dykes constructed over relatively loose hydraulically deposited ash are liable for liquefaction. Therefore, dyke was planned with starter dyke of 19 m height and nine subsequent raisings of 5 m height with centre-line method. During 6th raising due to some issues in 600 m zone, dyke could not be raised through envisaged centre-line method. This necessitated modified design keeping top level of raised dyke of affected zone same as adjacent zone. Considering site conditions and sustaining plant generation, it was explored to raise the dyke in affected zone with upstream method with enhanced height of 7 m as against 5 m height in centre-line method. The health condition of the existing dykes is checked and found to be stable under static and pseudo-static loading scenarios. The proposed raising with upstream method in affected zone is found to be feasible, however observed factor of safety is marginally less compared to centre-line raising. Hence, it was explored to construct the upstream raising in affected stretch with reinforced foundation. The strengthening of foundation soil (1.5 m depth) using woven geotextiles was finalised. The reinforcement elements are embedded in compacted ash layers of each 0.5 m height with suitable anchoring on either side. The adopted scheme is executed and found to be efficient in mitigating distress/slippage of dyke under static and pseudo-static conditions due to probable deep-seated failure of foundation and effective in preventing differential settlements.