Note
A 4-layer, two-dimensional finite difference model is used to quantify residual motion in response to six tidal constituents and windstress. The model is applied to Indian River lagoon, on the Atlantic coast of central Florida. Wind, water level and near-bottom current measurements were made hourly during a 65-day study period in the summer of 1981. Tidal motion in the southern segment of the lagoon is a response to interacting tidal waves moving northward and southward from St. Lucie and Ft. Pierce Inlets, respectively.