Histogram of rainfall during a typical storm event overlaid with hydrographs showing:
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{{textbox|Histogram of rainfall during a typical storm event overlaid with hydrographs showing:
<br />•pre-development (blue) peak discharge is low and creates the least amount of runoff
<br />•pre-development (blue) peak discharge is low and creates the least amount of runoff
<br />•post-development without SWM facilities (red) discharge responds quickly to rainfall and has high peak flow
<br />•post-development without SWM facilities (red) discharge responds quickly to rainfall and has high peak flow
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<br />•post-development with an end-of-pipe SWM pond (green) discharge reaches the same peak flow as pre-development conditions but produces more runoff The checkered yellow space between the blue and green lines shows the difference between the runoff volumes - this area is where LID can be used to reduce runoff by storing and infiltrating rainfall. Image credit: Daniel Filippi.]]
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<br />•post-development with an end-of-pipe SWM pond (green) discharge reaches the same peak flow as pre-development conditions but produces more runoff The checkered yellow space between the blue and green lines shows the difference between the runoff volumes - this area is where LID can be used to reduce runoff by storing and infiltrating rainfall. Image credit: Daniel Filippi.]]}}