The present study is aimed at investigation of surface water quality of Gulf of Kachchh (GoK), Gujarat. The main objective of this study was to convert complex data set of water quality parameters from GoK into comprehensive, simple, and interpretable observations. Hence, physicochemical parameters and nutrients of surface water from GoK were analysed. Chemometric results indicated that oxygen, salinity, dissolved solids, nutrient, and natural conditions were the factors that affected surface water quality. The water quality index was calculated to identify water quality classes to evaluate the spatio-seasonal trend in the study area. The results revealed that water quality was moderate in summer, worst in pre-monsoon, and best in post-monsoon. The study also highlighted that Marine National Park (central GoK) was observed to be comparatively in good condition with abundant marine biodiversity. Thus, the results of chemometric study of water quality parameters can be a valuable tool for government authorities for sustainable development of GoK.
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