Multiple choice general knowledge science & technology By definition, a flood is: an interval of time during which stream discharge exceeds the capacity of the stream channel an interval of time during which stream velocity increases its discharge an interval of time during which a stream occupies its flood plain none of these is an adequate definition of a flood Reveal answer Fill a bubble to check yourself A Correct answer Explanation A flood is defined as when stream discharge exceeds the channel's capacity, causing water to spill onto floodplains. This is the standard hydrological definition used by geologists and hydrologists.