The task of this study is to assess the severity of anthropogenically induced soil erosion on a loess-mantled hillslope on the foothills of Banks Peninsula, in the South Island of New Zealand. The analysis is restricted to a slope segment representative for the soil creep-type processes that dominate on convex soil-mantled hillslopes which satisfy the assumptions of the soil erosion measurement techniques employed. To quantify long-term (natural) and short-term (anthropogenically induced) erosion rates tracers within the soil are used. The thickness of soil above a ca. 26,500 year old tephra and an inventory of the amount of that tephra are used to determine the long-term rate across a convex hillslope, from the interfluve to the midslope. An inventory of bomb-fallout 137Cs is used to determine short-term rates over the same hillslope. A slope dependent transport model is parameterised to encapsulate transport efficiency relevant to the short and long time scales, and the parameters used as a basis for comparing soil erosion rates at different time scales. For the long-term erosion rate, the parameter K, the transport coefficient, is 0.003 m/yr. For the short-term erosion rate, the 137Cs analysis does not show any significant redistribution pattern. These results suggest that the erosion occurring on the convex upper backslopes on the ridges of Banks Peninsula is so slow that it cannot be determined with the 137Cs technique, as its resolution is too low. Nonetheless, despite the relatively stable conditions on the upper backslopes, erosion is evident at the tunnel-gullies on the lower backslopes requiring future research for its quantification.