This document summarizes research using 3D modeling to study mixing in a stratified urban pond with a thermal water inflow. The model simulated conditions over 7 days in winter. It reproduced the shape of the thermal plume, vertical temperature profiles measured at various depths, and low flow velocities measured near the shore. Different vertical deflector wall configurations were tested to improve water quality by enhancing circulation, but did not significantly influence conditions. A circulation system may be considered in future modeling to test its impact on mixing.