Tidal variation in tropical coastal water plays an important role on physicochemical
characteristics and nutrients concentration. Baseline measurements were made for nutrients
concentration and physicochemical properties of coastal water, Port Dickson, Malaysia.
pH, temperature, oxidation reduction potential, salinity and electrical conductivity
have high values at high tides. Principal Components Analysis (PCA) was used to understand
spatial variation of nutrients and physicochemical pattern of Port Dickson coastal
water at high and low tide. Four principal components of PCA were extracted at low
and high tides. Positively loaded nutrients with negative loadings of DO, pH and ORP
in PCA outputs indicated nutrients contribution related with pollution sources. This
study output will be a baseline frame for future studies in Port Dickson involving
water and sediment samples. Water and sediment samples of future monitoring studies
in Port Dickson coastal water will help in understanding of coastal water chemistry
and pollution sources.