KnowraVertical datumLinked fromLinked fromThe 13 pages that link to Vertical datum, each with the reason it gives.All 13Broader topic 1Related 7Narrower topic 4Compared with 1Mean sea levelNarrower topic: Mean sea level can serve as the reference surface for elevations, but its definition depends on the chosen datum.Tide gaugeNarrower topic: Gauge levels only have meaning when tied to a defined vertical reference.Orthometric heightNarrower topic: A vertical datum specifies the reference framework in which orthometric heights are reported.Height above mean sea levelNarrower topic: It specifies the reference surface against which the height is reported.