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Vertical Clearance Reference (VCD)

DGIF baseline 2026-1, the latest. Earlier baselines: timemap.

RDF: vcd.ttl

Name

verticalClearanceRef

Definition

The reference water level from which the safe vertical clearance is measured, if the clearance is measured from a body of water.

Accepted

2013-10-18

Defined by

DFDD

Values

• VCD_10 Mean Higher High Water
• VCD_15 Mean Sea Level
• VCD_24 Mean Higher High Water Springs
• VCD_28 Highest High Water
• VCD_30 Indian Spring High Water
• VCD_7 Mean High Water
• VCD_9 Mean High Water Springs

Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.