Water quality in Binh Thien lagoon, An Giang province, was studied to evaluate the fluctuation of physico-chemical parameters, and obtained results may serve as baseline information for lagoon management, specifically for the sustainable management of fisheries and aquaculture. The study was carried through twelve times of water sampling for temperature, depth, pH, TSS, NO2 -,DO , COD, BOD, TAN, P-PO4 3and coliform. analyses at 30-day intervals from January to December 2016. The water samples

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... re collected along a transect including in front, middle and back of the lagoon, and both of surface and bottom sites (50cm in depth and 50cm above the bottom, respectively). Results revealed that water quality parameters in Binh Thien lagoon varied on both temporal and spatial scales, parameters in this study were under the Vietnam national standard of surface water (QCVN 08-MT:2015/BTNMT) except an over case of COD in the dry season. Besides, coliform in the dry season was more abundant than in the wet season, it means that Binh Thien lagoon is being received large waste water from local community in the region.