This study focuses on the one-dimensional (1D) ground response analysis of a pond ash dyke at Panki thermal power plant, India (Seismic Zone-III), under the influence of three different earthquake ground motions using SHAKE2000 software. Pond ash samples are collected from the dyke at intervals of 1.5 m, extending up to 15 m in depth. The input parameters for each layer, essential for the response analysis, are obtained through laboratory testing on the collected samples from varying depths. Since the study site is situated in the Indo-Gangetic Plain, close to the Himalayas, three moderate-magnitude earthquakes originating from the Himalayan Frontal Thrust (HFT) are chosen as the input motions for the analysis. The study analyzes the time-varying behavior of acceleration, shear stress, and shear strain across different pond ash layers. Additionally, the variation in peak ground acceleration (PGA) with depth has been assessed. The results indicate that the shallow layers of the pond ash show higher PGA values than the deeper layers. Moreover, the layer-wise PGA of the pond ash deposit is significantly affected by the magnitude and duration of the input motions. These outcomes are also compared with previous findings from seismic studies of ash deposits at other locations in India, offering new insights into the seismic performance of pond ash deposits.