The hydraulic behavior of geocomposite chimney drains in a conventional levee section subjected to flooding is at first investigated with the help of numerical modeling. The feasibility of using fly ash as an alternative construction material in the body of the levee is subsequently analyzed with varying thickness of earth cover. Seepage analysis was carried out by using SEEP/W and stability analysis was performed by SLOPE/W software packages of Geostudio, GEOSLOPE International Ltd., Canada. The analysis of the levee section with fly ash indicated that fly ash can be effectively used in the body of the levee without altering its seepage and stability aspects. It was observed that a geocomposite chimney drain (GCD) can ensure a reduction in pore water pressures and ensure adequate stability to the levee section. The above finding indicates that fly ash can be reused in construction projects of levees with basic earth cover and with provision of a geocomposite material exhibiting in-plane and cross-plane drainage properties. This can significantly reduce the construction cost of the levee and address the environmental hazards related to the disposal of fly ash.