Assessment of Seasonal and Annual Mean of Physico–Chemical Parameters in Kuduvaiyr Estuary, Nagapattinum East Coast, Tamil Nadu India

Water is one of the most common and the large precious resources on world. ground water resources have been contaminated by organic, inorganic and biological pollution. Therefore management of aquatic ecosystem in particular has become a main concern in present years. Estuaries constitute a major Interface between land and the ocean and have been regarded as one of the most important aquatic system. Surface water samples were collected from Kuduvaiyr estuary are during period of 2014 to 2015. The physicochemical parameters such as rain fall, pH, atmospheric and surface temprature, Dissolved oxygen and salinitys were assessed different seasons (Pre- Monsoon, Monsoon, Pos- Monsoon and Summer). The physico–chemical changes may have the tendency to accumulate in the various organs of estuarine organisms, especially fish which may in turn enter into the human metabolism through consumption causing serious hazards.