Although it is generally accepted that wetlands in drylands are subject to higher fire frequencies than wetlands in humid regions, little is known about how wetlands in varied hydrogeomorphic settings mediate runoff and material fluxes in the post-fire catchment landscape. This paper evaluates the intermediary role of wetlands in water and sediment dispersal through a wet season that followed the March 2015 wildfire in the Silvermine River catchment, Cape Town. Field and laboratory analyses of the development and dynamics of soil water repellency were conducted across terrestrial hillslope, river riparian zone and hillslope seepage wetland sites. The latter two sites had significantly lower soil water repellency than the terrestrial site immediately preceding the first large rainfall event, and soil moisture emerged as a significant predictor of soil water repellency, consistent with previous research. Remote sensing analysis of post-fire vegetation recovery revealed that the first emergence of new vegetation occurred within wetlands and other moisture-rich areas across the catchment, likely associated with intact rhizome networks of the predominant sprouting vegetation in these areas. This post-fire green flush could have served to enhance post-fire infiltration due to macropore flow along rhizome networks, and to reduce early wet season runoff and erosion due to the rapid establishment of rainfall-intercepting leaf and stem structures. Longitudinal investigations of post-fire river channel and bed sediment characteristics detected a transition in bed composition from gravel to sand through hillslope-channel coupling and channel bank erosion, and effective conveyance of sand through the catchment to a constructed wetland at the catchment outlet. Suspended sediment sampling upstream, within and downstream of this wetland suggested a relative sediment trap efficiency of similar to 87 to 99%, supporting previous observations of post construction aggradation at the head of the wetland, with serious implications for long term wetland maintenance and management. Insights from field and remote sensing studies were used to develop a conceptual geospatial model of the role of wetlands in varied hydrogeomorphic settings in post-fire catchment sediment (dis)connectivity. Hillslope seepage wetlands located across the burned region of the catchment were shown to play an important role in hillslope surface sediment trapping and erosion control, contrary to common assumptions, and sediment connectivity modelling is recommended as a tool for further research aimed at understanding the intermediary role of wetlands in drylands in material fluxes in post-fire landscapes.