The paper describes a three-dimensional hydrodynamic model of stratified fluid flow CAMERI3D/HD-ST developed in the Coastal and Marine Engineering Research Institute (CAMERI). The model, which incorporates the shallow water approximation, has been successfully applied for solution of various problems encountered within the coastal waters along the Israeli shore, such as release of cooling water and brine disposal. The empirical coefficients employed in the turbulent model have been selected based on comparison with the measurements of heated water spreading in the field and laboratory experiments. The selected coefficients are model constants and should not be modified in specific applications. Then, the model was thoroughly verified versus field measurements: instrumental temperature measurements in many locations along the Mediterranean coast of Israel including detailed temperature measurements in the Ashkelon region, airborne and satellite imaging of temperature plume propagation.