The study was carried out between October, 2007 and October, 2008. Physical and chemical parameters (temperature, pH, dissolved oxygen, salinity, turbidity, hardness, alkalinity, ammonia nitrogen, nitrite, nitrate,phosphate, silica) and biological parameters (chlorophyll-a, fecal coliforms, Vibrio and bacteria counts) were analyzed. To assess the dependency relationship between the variables the non-parametric correlation test of pearman was applied. The Hydrological Index (HI)c was applied to evaluate the potential use of the two coastal areas for shrimp culture. The Canadian Water Quality Index (CCME WQI) was applied to compare the water quality parameters between the shrimp farm water supply lagoon and those two coastal environments.