North American vertical datum of 1988

{
  "id": "MLC-T-ENV-019103",
  "term": "North American vertical datum of 1988",
  "field": "Environment",
  "definition": "A fixed reference for elevations determined by geodetic leveling, derived from a general adjustment of the first-order terrestrial leveling networks of the United States, Canada, and Mexico; NAVD88 supersedes NGVD29.",
  "abbreviation": "NAVD88",
  "subject": "Water",
  "references": [
    "Coastal Sensitivity to Sea-level Rise Glossary and Acronyms"
  ],
  "url": "https://mlchart.com/terminology/environment/north-american-vertical-datum-of-1988/"
}