MODELING MIMICO CREEK AS A SURFACE DISCHARGE

A steady state, length scale model and a three-dimensional stratified hydrodynamic/pollutant transport model. were used to determine the pol lutant distribution in a nearshore area of Lake Ontario, Canada, due t o loading from Mimico Creek. The steady state model, named CORMIX3, is a knowledge based expert system intended for surface discharges subje ct to constant current flowing in one direction. The 3D time-dependent hydrodynamic/pollutant transport model can simulate wind-induced circ ulation in the bay under both isothermal and stratified conditions. Fi eld data taken around the mouth of Mimico Creek were compared to the m odels' dilutions for cases under isothermal and stratified conditions. CORMIX3 predictions agreed quite well with the 3D model's predictions as well as the field data.