To understand what are the main reasons to cause the disease and dead off on the marine shrimp culturing system in Mekong coastal areas, the survey on 14 sites was carried out in five hamlets of Baclieu province. The physical, chemical and plankton factors in the groups of water body such as dead shrimp ponds, stronger shrimp ponds and water supplied systems were sampled. | DFID/CRF Project “Accelerating poverty elimination through sustainable resource management in coastal lands protected from salinity intrusion” April 2000 – March 2003 Environmental Rapid Assessment In the break-out shrimp diseases of Baclieu province, Mekong delta, Vietnam Duong Tri Dung - Le Anh Tuan Paper presented at the Mid-term Review Workshop in Bac Lieu June 2002 University of Newcastle/University of Cantho/ICLARM Department of Agriculture & Rural Development, BacLieu Province, Vietnam i CONTENT Abstract2 I. Introduction 2 II. Methodology4 1. Sampling 2. Data a. Physical and chemical samples. . 4 b. Plankton 4 3. Analyzing .