Identify five catchment characteristics and summarise the impact they can have on runoff. Give 3 examples of what Flood

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Identify five catchment characteristics and summarise the impactthey can have on runoff.Give 3 examples of what Flood estimation in the UK is usedfor.Assuming that the annual maximum flood peaks series for aparticular River between 2001and 2016 fits the Gumbel distribution and has a mean of 58 m3/s anda standard deviation of22 m3/s: Estimate the median and 100-year flood flowThe highest recorded flow in the river during the gauged period was123 m3/s in March 2007when many parts of the UK experienced flooding. What is theprobability of this flow beingequalled or exceeded and what is its return period?