Metadata : Land Units of the Coastal Plains - Mary River Mapsheet and Extension


Metadata Details:

Name:AS/NZS ISO 19115 Geographic Information - Metadata, ANZLIC Metadata Profile


Date Metadata Extracted:2024-05-23

Date Metadata Last Updated:2021-11-17

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ANZLIC Identifier:2DBCB771211806B6E040CD9B0F274EFE

Title:Land Units of the Coastal Plains - Mary River Mapsheet and Extension

Citation Date:2000-01-14

Date Type:publication

Custodian:Department of Environment, Parks and Water Security



This dataset provides polygon information on the map unit boundaries of the Coastal Plains, Mary River and extension area, Northern Territory. The main purpose(s) of the survey are general resource inventory, evaluation for dryland agriculture, land use planning and grazing.

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Spatial Domain:

Bounding Coordinates:

Dataset Status

Dataset ID:ANZNT0903000009


Character Set: Latin 1


Maintenance and Update Frequency:notPlanned

Data Currency Start Date:1971-01-01

Data Currency End Date:2006-06-26

Access Constraint:Download the spatial data package (contains spatial data, maps and reports) via

You are licensed to use the geospatial products on the terms and conditions set out in: Creative Commons Attribution 4.0 International Public License (CC BY 4.0) at:
If you do not agree to the terms and conditions you must not use the geospatial products.
You are free to copy, communicate and adapt the licensed material, provided that you abide by the licence terms (including Attribution) and attribute the licensed material using the statement:

Supplied by the Department of Environment, Parks and Water Security. Copyright Northern Territory Government.

Data Quality

Lineage:Original map unit boundaries delineated from aerial photographs and stereoscope interpretation. Map units transferred to clean dyeline sheets or topographic maps via a mapograph. Original maps were hardcopy only. With the advent of geographic information systems polygons were digitised by rectifying the original hard copy maps.

Map unit boundaries derived using hard copy aerial photography and stereoscope, satellite imagery (post 1993), geological and topographic maps. Field data (site data) described and classified according to national standards at the time of capture.

Map unit polygons collected via geographic information system (ARC/MapInfo). Core landform, soil and vegetation attributes attached to map units with additional attributes unique to individual surveys.

Positional Accuracy:POLYGON DATA

Hardcopy maps rectified using control points marked on original hardcopy maps. Control points include creek lines, cadastre (fences) and other topographic features. Depending on the nature of the landscape (the number of control points) positional accuracy may vary. Positional accuracy generally considered moderate.


Survey teams navigated during field operations with topographic maps, aerial photographs and prismatic compass's. Point source locations marked on aerial photography in the field. Positional accuracy considered within 300m but generally below 200m depending on the terrain. Site coordinates derived by transferring site locations from aerial photographs to topographic maps and coordinates calculated. In some cases sites have been georeferenced directly from aerial photography to Google Earth Web Map Server in MapInfo or ArcGIS.

Attribute Accuracy:Attributes assigned according to the dominant feature. For example where ten sites have been grouped to describe a particular map unit and two different soils described from these sites then the dominant soil is chosen.

Logical Consistency:GIS editing tools were used to rectify all overshoots and undershoots in linework. Using ArcInfo topographical consistency checks were performed to detect flaws in the spatial data structure. The coverage was cleaned, to eliminate any duplicates arcs. The coverage was built for arcs and polygon topologies. A label errors routine was run to detect unlabelled polygons. A node errors routine was run to identify pseudo nodes and dangles. Checks were done to unsure that all classified polygons are closed, nodes are formed at intersections of lines and that each polygon has only one label.



Data Requests OfficerDepartment of Environment, Parks and Water SecurityGeospatial Services Branch (on behalf of department)

Data Dictionary

No data dictionary defined for this dataset

Supplementary Information

Department survey code is CPMARY_50.

Laity, J.M. and Day, K.J. (1971). LAND UNITS OF THE COASTAL PLAIN, NT (1971). Land Conservation Section, Department of the Northern Territory.
Download report (PDF) from the NT Library

Land Resources of the Mary River Catchment.
A compilation of 8 land resource surveys, including the Land Units of the Coastal Plains Mary River, were appended to a single dataset. No report was written for this survey.
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