Weir

{
  "id": "MLC-T-MET-003061",
  "term": "Weir",
  "field": "Meteorology and atmospheric science",
  "definitions": [
    "A barrier constructed across a river or stream to alter its flow characteristics, such as raising the water level upstream or measuring discharge. It typically consists of a low dam or wall with a specific crest shape over which water flows. Weirs are used in hydrology for flow measurement and water management.",
    "In hydrologic terms,\n(a) A low dam built across a stream to raise the upstream water level (fixed-crest weir when uncontrolled);\n(b) A structure built\nacross a stream or channel for the purpose of measuring flow (measuring or gaging weir)."
  ],
  "references": [
    "NWS Glossary"
  ],
  "url": "https://mlchart.com/terminology/meteorology/weir/"
}