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Runoff from a new development is often conveyed to a detention pond that temporarily stores water and reduces the increase in flows. Since detention is intended to prevent localized flooding, questions begin to arise when downstream residents complain of new flooding issues after construction. Does the detention design meet criteria? Was there an abnormally large storm event? Does the criteria need to be reevaluated?

Recently, the Town of Sunnyvale was confronted with several questions from residents when two recently constructed schools possibly created new downstream flooding...

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Tagsdetention regulations, 100 year storm event,