The present study aimed to assess the diversity of 300 rice germplasm lines including six checks under submergencecondition of rainfed lowlands was conducted during summer 2016 at ZAHRS, Shivamogga. All the 300 germplasm lineswere grouped into 19 clusters based on physiological, morphological, yield and yield related parameters. Cluster patternrevealed that cluster VII consists of maximum of 35 germplasm lines followed by cluster XIV with 26 germplasm lines andcluster IV was lowest and it was solitary. The maximum intra cluster distance was observed in cluster X (2289.59). Amongthe clusters inter cluster distance was lowest between cluster V and cluster IX (162.74) and cluster XIII to XIX (20817.80)records highest inter cluster distance followed by cluster XVIII to cluster XIX (20259.35). Germplasm lines recordedhighest mean for yield per plant in cluster XVII (44.15 g) and lowest in cluster XIV (4.65g). Highest contribution towardstotal divergence was recorded by plant height (31.22 %) followed by survival per cent (24.13 %), yield per plant (21.41 %),and total tillers per plant (0.11 %) contributed least to divergence.