Grading

{
  "id": "MLC-T-MET-006022",
  "term": "Grading",
  "field": "Meteorology and atmospheric science",
  "definition": "The process by which a land surface is worn down toward a uniform, nearly level slope, as when erosion and deposition by streams lower hills and fill low ground. For a stream, grading ends when its bed reaches the slope at which the flow can just carry the sediment supplied to it. The lowest level a river can erode to is its base level, usually sea level.",
  "url": "https://mlchart.com/terminology/meteorology/grading/"
}