  The Hall effect in SrRuO$_3$ thin-films near the thickness limit for
ferromagnetism shows an extra peak in addition to the ordinary and anomalous
Hall effects. This extra peak has been attributed to a topological Hall effect
due to two-dimensional skyrmions in the film around the coercive field;
however, the sign of the anomalous Hall effect in SrRuO$_3$ can change as a
function of saturation magnetization. Here we report Hall peaks in SrRuO$_3$ in
which volumetric magnetometry measurements and magnetic force microscopy
indicate that the peaks result from the superposition of two anomalous Hall
channels with opposite sign. These channels likely form due to thickness
variations in SrRuO$_3$, creating two spatially separated magnetic regions with
different saturation magnetizations and coercive fields. The results are
central to the development of strongly correlated materials for spintronics.
