The occurrence of liquefaction is a common cause of foundation failure during earthquakes. This paper presents the evaluation of liquefaction susceptibility of sandy soils collected from Yamuna flood-plain in Delhi. The sand in this area consists of poorly graded silty sand. Samples collected were analyzed for particle size, specific gravity & relative density and presented in the paper. Specimens were sheared under undrained conditions at varying peak-to-peak cyclic stress of 20, 30 and 50 kPa with constant frequency of 0.5 Hz to have cyclic resistance ratio (CRR) as variable parameters. A plot of CRR and a number of stress cycles to cause liquefaction was generated. Significant cycles for different earthquake magnitudes ranging from 6.0 to 7.5 were considered to find out cyclic strength of soil. Seed’s simplified approach was used to calculate the induced cyclic shear stress at various peak ground accelerations (PGA) ranging from 0.12 g to 0.36 g. Induced cyclic stresses were compared with the cyclic strength obtained from laboratory curve to estimate the depth of liquefaction zone. A Factor of Safety (FOS) for each case was established. This study predicts that for magnitudes of 6.0, 6.75 and 7.0, Yamuna sand deposits exhibit resistance to liquefaction at depths up to 15 m or even deeper. For a magnitude greater than 7.0 & PGA = 0.36 g, the liquefaction zone has been identified at depth up to 10 m, beyond which the possibility of liquefaction reduces due to an increase in FOS by more than 1.20. To ascertain that, deposit is sufficiently dense and not susceptible to liquefaction, cyclic shear strength should always be more than 1.20 times the induced stresses. Different methods for ground improvement are suggested to increase the cyclic shear strength and reduce the impact of liquefaction.