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Line 32:
Line 32: − <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 with an end-of-pipe SWM pond (green) discharge reaches the same peak flow as pre-development conditions but produces more runoff.+
→Storm events during varying development phases & SWM controls
'''Histogram of rainfall during a typical storm event overlaid with hydrographs showing:'''
'''Histogram of rainfall during a typical storm event overlaid with hydrographs showing:'''
*pre-development (blue) peak discharge is low and creates the least amount of runoff
*post-development without SWM facilities (red) discharge responds quickly to rainfall and has high peak flow
*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.
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.