Soil erosion has been traditionally divided into sheet, rill, and gully erosion. Rills and gullies concentrate overland flow, leading to a significantly increased flow erosivity. These forms of concentrated flow erosion, both above and below ground, represent an important sediment source within watersheds and produce sizeable economic losses (e.g. reduced crop yields, reservoir sedimentation). Moreover, rills and gullies are effective links for transferring runoff, sediment and pollutants. In addition, channel erosion plays a key role in the development of badlands. Despite their relevance, the physical mechanisms that constitute concentrated flow erosion remain poorly understood.

This session aims to address this research gap and will focus on recent studies aiming to better understand the process of rill and gully erosion, with the ultimate aim of developing predictive tools and effective management strategies. As such we welcome contributions on: monitoring and measurement techniques; the factors and processes controlling rill, piping and gully erosion; modelling approaches; restoration and control; the role of piping, rills and gullies in hydrological and sediment connectivity; and rills, gullies and badland dynamics in a context of Global Change.