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;rainwater harvesting
;rainwater harvesting
:The practice of intercepting, conveying and storing rainwater for future use. Captured rainwater is typically used for outdoor non-potable water uses such as irrigation, or in the building to flush toilets.
:The practice of intercepting, conveying and storing rainwater for future use. Captured rainwater is typically used for outdoor non-potable water uses such as irrigation, or in the building to flush toilets.
;Rational Method
;Rational method
;rational method
:This formula is used to calculate peak rates of runoff when designing drainage LID BMPs in urban area. It is useful in estimating runoff on relatively small areas (roofs, parking lots, medians, road right-of-ways, etc.)
*<math>Q = CiA</math>:
**<math>C</math> is the site runoff coefficient,
**<math>i</math> is the rainfall intensity, and;
**<math>A</math> is the drainage area)
;RWH
;RWH