In Drummondville, the combination of clay-rich glacial till and the Saint-François River basin creates conditions where surface runoff and subsurface seepage can accelerate soil loss faster than many expect. We see this particularly on sloped lots near the city core or along agricultural fringe areas where topsoil depth is already thin. A rigorous soil erosion analysis in Drummondville starts with field reconnaissance and infiltration testing to identify critical flow paths. Before committing to a retaining wall or grading plan, it makes sense to couple this with a permeability field test to measure hydraulic conductivity directly and with infiltration testing to quantify water uptake rates under saturated conditions. These two data sets form the backbone of any credible erosion assessment here.
RUSLE2 modeling calibrated against local NRCS soil survey data for Drummondville provides erosion rates with uncertainty bands under ±15% for typical clay-silt profiles.