![]() ![]() The geomorphological impact of the event is evaluated by comparing aerial photographs from before and after the flood, along with direct field observations. These results raise some important general questions about flood estimation in steep mountain catchments. The flood transported boulders with b-axes up to 1400 mm. The peak flood discharge is reconstructed using palaeohydrological and rainfall–runoff methods, which provide discharge values of 27–74 m3 s−1, and 4–6 m3 s−1, respectively. Records show 164 mm of rainfall in the 24 hours preceding the flood. The meteorological conditions associated with this event are described using local rainfall records and climatic data. This event caused a major channel avulsion at the fan apex diverting the main flood flow to the south, blocking the A591 trunk road and causing local flooding. ![]() The torrent shows evidence of several major flood events, the most recent of which was in January 1995. Raise Beck is a mountain torrent located in the central Lake District fells, northern England (drainage area of 1♲7 km2). ![]()
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