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urban hydrology
precipitation falls in greater amounts and intensity
impacts of urbanisation on drainage: inputs increased
precipitation from pollution and UHI
extra water artificially imported into system
impacts of urbanisation on drainage: outputs unbalanced
less vegetation reduces EVT
impermeable surfaces increase surface runoff
impacts of urbanisation on drainage: transfers increased
runoff contaminated by dust and pollution
artificial drainage systems above and below ground (guttering and storm drains)
urban water cycle hydrograph
show rapid rise in discharge over short period of time
urban water cycle hydrograph features
short lag time, high peak discharge, fast return to base flow
causes of urban hydrograph
low infiltration rates and high surface runoff
Note 
Flashcard (33)