Critical discharge

{
  "id": "MLC-T-MET-004757",
  "term": "Critical discharge",
  "field": "Meteorology and atmospheric science",
  "definition": "The maximum flow rate that a channel or conduit can pass under conditions of critical flow for a given specific energy. This state occurs when the Froude number is equal to 1, meaning the flow velocity matches the propagation speed of a small surface wave. Exceeding this discharge without an increase in energy head is not possible, often leading to a backup of water upstream or a transition to supercritical flow downstream.",
  "url": "https://mlchart.com/terminology/meteorology/critical-discharge/"
}