iajabmsIAJABMSIAJABMS2709-3298https://doi.org/10.47310/iajabms.2022.v03i01.008Assessment of Post Cyclonic Effect of Ockhi Cyclone in Colachel SeaportSundaramRavikumarAnnamalaiJeyameenakshiKingSolomonEbenezerThe Ockhi cyclone was one of the unforeseen events which intensely affected all normal lives. It has been believed that the characteristics of seawater would alter due to cyclones. As water is considered essential for survival, it needs to be monitored so that the organism that lives in it would have a carefree life which will result in more productivity. Water samples collected from the Colachel harbor were investigated for Physico-chemical analysis by following standard procedures. The surface temperature of seawater during the analysis was 29°C±2.0 when compared with the before cyclone it was increased by 10.3%(p<0.05), the pH range was 8.6±0.2 but when it was compared with the before cyclone there was 9.3% (p<0.05) increase in pH was noticed, the seawater salinity is 31 ppt±2.0 (p<0.05), the dissolved oxygen is one of the most important qualities of water and it was recorded as 5.4 mg/l-1±0.2 which is found to be higher by 12.9%(p<0.05) when compared with the previous cyclone, the amount of ammonia present in the seawater was 0.022 mg/l-1±0.002 when compared with the before cyclone it was decreased by -22.7%(p>0.05), the concentration of nitrite in the collected seawateris1.69 mg/l-1±0.02 but when compared to before cyclone it was reported to increase by 40.8%(p<0.05), the level of silicate in the study area was0.661mg/l-1±0.002 but when compared with the before cyclonic data, a decrease in trend was noticed by -7.4%(p>0.05).