Reefs

A polygon feature class displaying the location of identified reefs and shoals within Queensland’s maritime waters.

Reefs
A polygon feature class displaying the location of identified reefs and shoals within Queensland’s maritime waters.
Column Name	Nulls	Format	Size	Description	Constraints
FEATURE_TYPE	No	Text	50	Unique feature type that identifies the type of feature. Options: Reef Shoal	dm_reef
NAME	Yes	Text	100	The name of the feature (if available)
ALTERNATE_NAME	Yes	Text	100	An alternate name of the feature if available from the Queensland Place Names Database, otherwise left blank
QLD_PNDB_ID	Yes	Long		Queensland Place Names Database unique identifier
ATTRIBUTE_SOURCE	No	Text	100	If the feature is named, the attribute_source is the source imagery, map, or data from which the features name has been obtained. If the feature is not named, the attribute_source is the source imagery, map, or data used to define what the feature type is.
ATTRIBUTE_DATE	No	Date		Date of the source imagery, map, or data used for attributing the feature.
ADDITIONAL_NAMES	Yes	Text	100	Other names of the feature if not recorded in the Queensland Place Names Database. May be commonly known by other names or have different spelling. Multiple names can be shown, separated by a comma.
ADD_NAMES_SOURCE	Yes	Text	100	The source map or data that the additional names were obtained. Multiple sources can be shown, separated by a comma. If multiple sources are shown, the written sequence will be the same as the written sequence of the names themselves.
FEATURE_SOURCE	No	Text	100	The source imagery, map, or data that the spatial location and shape of the of the feature was obtained from.
FEATURE_DATE	No	Date		Date of the source imagery, map, or data that the spatial location and shape of the feature was obtained from.
GBRMPA_REEF_ID	Yes	Long		Unique identifier allocated to a reef by the Great Barrier Reef Marine Park Authority
RELATIONSHIP	No	Text	12	Relationship to sea level. Options: Exposed Submerged Tidal	dm_geo relationship
PFI	No	Text		A Persistent Feature Identifier (PFI) is generated for each feature at the point of creation in the database. The value of the PFI will stay with the feature through all changes to the feature (both spatial and non-spatial) until the feature is retired. (See Persistent and Unique Feature Identifiers)
UFI	No	Text		A Unique Feature Identifier (UFI) is generated for each new feature at the point of creation in the database (at this point the PFI and UFI will be the same). The value of the UFI will stay with the feature through all changes to the feature (both spatial and non-spatial) unless the feature is split into multiple other parts. If the feature is split, the separate parts will retain the original PFI but new UFI’s will be generated for the split parts. (See Persistent and Unique Feature Identifiers)
CREATED_DATE*	No	Date		The date the feature was originally captured and first loaded to the database *internal use only
LAST_EDITED_DATE*	No	Date		Date of the last editing or revision to the feature *internal use only
DIMENSION_M2	No	Double		The area of the feature measured in square metres GDA2020
UPPER_SCALE	No	Long		The upper scale for which the feature should be considered suitable for digital display	dm_upper_scale
TEXT_NOTE	Yes	Text	50	For mapping purposes. Additional annotation that can be shown on a map.
ADD_INFORMATION	Yes	Text	255	A comment field (additional information)

Feature Type definitions:

Reef – An offshore area of rock or coral, lying near the surface of the sea, exposed at low tide.
Shoal – An area of sand or mud, lying near the surface of the sea and may be visible at low tide, but is usually covered by water.

Relationship:

Exposed – Always exposed.
Submerged – Not exposed at low tide.
Tidal – Exposed at low tide.

Upper scale:

1:25 000 – < 4,000 m²
1:100 000 – >/= 4,000 m² and < 62,500 m²
1:250 000 – >/= 62,500 m² and < 400,000 m²
1:1 000 000 – >/= 400,000 and < 1,000,000 m²
1:2 500 000 – >/= 1,000,000 m² and < 3,000,000 m²
1:5 00 000 – >/= 3,000,000 m² and < 6,000,000
1:10 000 000 – >/= 6,000,000 m²

Capture process:

REEF

Definition: An offshore area of rock or coral, lying near the surface of the sea, exposed at low tide.

Alternate Terms: Drying Reef, Fringing Reef, Great Barrier Reef, Ledge, Rocks,

Capture as a 2D polygon
The actual extents of these features are fuzzy and as such hard to define.
Locate the extent from maritime charts, other datasets, existing mapping, organisations, Local Government websites, or other source material.
The general outline is plotted from orthorectified imagery or maritime charts including the Great Barrier Reef Base Maps produced by the Department on behalf of the Great Barrier Reef Marine Park Authority.
The name is obtained from Queensland Place Names dataset.

SHOAL

Definition: An area of sand or mud, lying near the surface of the sea and may be visible at low tide, but is usually covered by water.

Alternate Terms: Bank, Bar, Shallows, Spit (those covered by water)

Capture as a 2D polygon
The actual extents of these features are fuzzy and as such hard to define.
Locate the extent from maritime charts, other datasets, existing mapping, organisations, Local Government websites, or other source material.
Capture features with an area greater than 1600 sq metres
The general outline is plotted from orthorectified imagery or maritime charts including the Great Barrier Reef Base Maps produced by the Department on behalf of the Great Barrier Reef Marine Park Authority.
The name is obtained from Queensland Place Names dataset.
Only named shoals are captured.

Return to Geographic Names