LMS - AN INTEGRATED LAKE MODELING SYSTEM

This paper deals with the modeling of the circulation and pollutant tr ansport in the nearshore areas of lakes and their tributaries. An inte grated hydrodynamic/pollutant transport modeling system (LMS) was deve loped which operates in an interactive environment and is equipped wit h powerful graphics. The model can predict: (a) the horizontal and ver tical current structure in the lake under isothermal and stratified co nditions for steady and variable wind conditions; (b) the spatial and temporal pollutant concentration distributions in the lake from multip le input pollutant sources such as creeks, sewer treatment plant outfa lls (STPs) and combined sewer outfalls (CSOs) discharging in the lake, and (c) the particle trajectories released in different locations in the lake. The model was calibrated with extant laboratory data, and fi eld data collected during the 1990-91 field season in Hamilton Harbour . The model was successfully applied to the St. Clair River in Sarnia, Hamilton Harbour and other nearshore areas in the Great Lakes.