ABSTRACTThe Martinelli Snowpatch occupies a shallow hollow on the south side of Niwot Ridge, Colorado Front Range. A relatively long-term (up to 10 years) record of sediment movement onto and across its floor and of sediment yields from its catchment basin is reported here. This record shows sediment fluxes which are highly variable in time but which define a spatially consistent pattern involving high flux rates (up to 1500 g/m/yr) onto the basin floor at its head and slower rates of downslope movement from there. The small stream channels in the basin have been stable over the period of study and show an approximately balanced budget of silt and clay sized sediments. They, and the basin floor, are accumulating coarser sediment at a slow rate (<1 mm/yr) which suggests long-term landscape development by a decay model (Thornes and Brunsden 1977). This would require that the“nivation hollow”form tends to be removed under present conditions, though it does not take solutional processes into account.