Home › value › hqc_22
Depression Auxiliary Contour (HQC_22)
DGIF baseline 2026-1, the latest. Earlier baselines: timemap.
RDF: hqc_22.ttl
- Name
depressionAuxiliaryContour- Attribute
- HQC Hypsography Portrayal Type
- Definition
- A closed auxiliary contour line delimiting an area of lower elevation than the surrounding terrain (a terrain depression) out of which there is no surface drainage and is used to portray important relief characteristics that would not otherwise be shown by depression index and depression intermediate contour lines.
- Description
- It is used in terrain depressions of extremely low relief to assist the proper depiction of the slope of the land. It is typically depicted with perpendicular ticks on the descending side of the depression auxiliary contour line and as a screened line so that it is distinguishable from depression index and depression intermediate contour lines and not unduly prominent.
- Accepted
- 2013-10-18
- Allowed for
Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.