LMS—an integrated lake modeling system

This paper deals with the modeling of the circulation and pollutant transport in the nearshore areas of lakes and their tributaries. An integrated hydrodynamic/pollutant transport modeling system (LMS) was developed which operates in an interactive environment and is equipped with powerful graphics. The model can predict: (a) the horizontal and vertical current structure in the lake under isothermal and stratified conditions for steady and variable wind conditions; (b) the spatial and temporal pollutant concentration distributions in the lake from multiple input pollutant sources such as creeks, sewer treatment plant outfalls (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 field data collected during the 1990-91 field seasong in Hamilton Habour. The model was succesfully applied to the St. Clair River is Sarnia, Hamilton Harbour and other nearshore areas in the Great Lakes.