This article investigates the spectral acceleration of the ground motion generated by the 2017 Sarpol-e Zahab earthquake, examining the spatial distribution of the observed spectra at different periods, revealing a distinct influence of source directivity. The earthquake motions were acquired by the Iranian Strong Motion Network (ISMN), and data from a total of 110 seismic stations were obtained from their network for the purpose of the present study. The regions located south of the epicenter experienced a higher spectral acceleration value compared to those sites located to the north. In addition, estimates from ground motion prediction equations (Abrahmson et al., 2014, ASK14; Akkar et al., 2014, ASB14) provided a basis for comparison. These equations predicted intensities over various distances and periods. The residual analysis results indicate that the ASB14 model provides a more accurate fit when compared to the ASK14 model for distances less than 300 km. However, for distances greater than 300 km, the ASK14 model demonstrates a better fit. The derived response spectra play a significant role in evaluating maximum response amplitudes and for seismic hazard studies. Our assessments combined PSA information with source characteristics, geology, soil conditions, and epicentral distance. The current study highlights the impacts of the 2017 Sarpol-e Zahab earthquake on the Darbandikhan Dam, which caused cracking on the road pavement along the Dam crest and horizontal and vertical displacement in some parts of the dam. Finally, the study evaluates the strong-motion distribution maps of acceleration response spectra (PSA) with 5% damping at various period intervals from (0.1 to 2.0 sec) on the dam site, which could produce the consequences observed for the dam.