Home › value › hqc_15

Approximate Depression Index Contour (HQC_15)

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

RDF: hqc_15.ttl

Name

approxDepIndexContour

Attribute

HQC Hypsography Portrayal Type

Definition

A closed contour line substituted for a normal depression index contour line whenever there is a question as to its reliability (for example: due to glacial ice or cloud cover).

Description

It is typically depicted as a broken line while maintaining depression index contour line weight and associated perpendicular ticks.

Accepted

2013-10-18

Allowed for

• CA010 Elevation Contour

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