Microseismic monitoring of shallow, thermally-driven projects, such as steam-assisted gravity drainage (SAGD), creates special monitoring challenges. The overburden and reservoir sediments are less consolidated, thus having lower seismic velocities and higher signal attenuation. Furthermore, steam is typically injected at lower pressures, resulting in smaller-magnitude microseismic events. The result is that the monitoring array’s effective radius of observation is significantly reduced and complete monitoring coverage of the area of interest becomes more difficult to achieve.