This paper join available information of environmental variables which allow to assess the hydrodynamics of the Armação do Itapocoroy Bight. Data of current speed and direction, tide, wind, salinity, temperature, turbidity and the bathimetry were acquired at different occasions, although when they are evaluated together, they permit to build a preliminary picture about the holding capacity of this environment to maintain the mollusc aquaculture. The water renewal rate is of the order of some days, and the proximity of the Itajaí-açu River estuary mouth allow that the river plume enter in a regular bassis into the bight. The occasional storm waves from east, together with wind and tide currents, act in the remobilization of material generated by the mussel culture.