Landform component mapping of north west Victoria

dataset: NW_LANDFORM
A polygonal dataset of mapped landforms in the Victorian Mallee. The dataset was created from the disaggregation of land systems originally defined by Rowan and Downes (1963). The disaggregation primarily involved an analysis of a 10 metre grid Digital Elevation Model (DEM) provided by the Department of Sustainability and Environment. The analysis included the use of the UPNESS index from the Fuzzy Landscape Analysis GIS (FLAG) model, Multi-resolution Valley Bottom Flatness (MrVBF) index, DEM derivative surfaces (such as slope, curvature, aspect and relative elevation) in combination with expert opinion, field observations and other supplementary datasets (such as aerial imagery, radiometrics, vegetation and GMU). The dataset was created in a staged approach through 4 project phases. The project was sponsored by the Mallee Catchment Management Authority with funding from the Federal government's Caring for our Country initiative. The final project report, "Disaggregation of landform components within land systems of the Mallee", and the Rowan and Downes (1963) report , "A study of the land of north-western Victoria", should be referred to when analysing or utilising this dataset. The landform component mapping was supplemented and refined during a "Wind erosion susceptibility mapping" project conducted in 2011. Details of changes are included in the associated project report (refer to that metadata record).
 
Citation proposal Citation proposal
(2019)

Landform component mapping of north west Victoria

Department of Jobs, Precincts and Regions
 

Description

Title
Landform component mapping of north west Victoria 
Alternate title
NW_LANDFORM 
Resource Type
Dataset  
Supplemental Information
Related Documents: None 
Status
Completed  
 
 

Temporal

Time period
2009-07-012011-06-30 
 
 

Spatial

Spatial representation type
Vector  
Code
4283 


 

 

Maintenance

Maintenance and update frequency
Not planned  
 
 

Format

 
 

Contacts

  Point of contact

Cited responsible party  

No information provided.

Cited responsible party  

No information provided.

Cited responsible party  

No information provided.

Cited responsible party  

No information provided.
 
 

Keywords

Topic category
  • Farming
  • Geoscientific information
 
 

Resource Constraints

Use limitation
. Users should be aware that landform component delineation is fuzzy in that in most cases clear boundaries between landforms do not exist. In most instances only the mid and upper slopes and crests of sandy rises such as dunes and hummocks have been mapped. Users should refer to the final project report and "A study of the land of north-western Victoria" Rowan and Downes (1963) report. The report provides the methodology used to derive the landform dataset and identifies associated limitations, the Rowan and Downes (1963) report details the morphology and variation in landforms across the land systems of the Mallee. 
Classification
Unclassified  
 
 

Lineage

Statement
Dataset Source: In 1963 Rowan and Downes published "Landsystems of north west Victoria" which broadly mapped and described land, land use, climate and vegetation patterns in the Mallee region of Victoria. From 2009 to 2011 landform components described within each land system were disaggregated using a 10 meter resolution digital elevation model. 19 landforms classes were mapped in total across dryland agricultural areas. These mapped landforms provided the basis for wind erosion susceptibility mapping (refer to separate metadata record). Dataset Originality: Derived 
Description
Collection Method: VicMAP elevation and field observations 
Description
refer to technical report 
 
 

Metadata Constraints

Classification
Unclassified  
 
 

Quality

Attribute Quality
Comments
85% 
Positional Accuracy
Comments
refer to VicMAP elevation 10 meter digital elevation model metadata 
Conceptual Consistency
Comments
consistent 
Missing Data
Comments
Dryland agricultural areas of the Mallee CMA region 
Excess Data
Comments
Landorm classes identified by Rowan and Downes (1963). A few additional landform components have been included. A total of 19 landform component classes were mapped. 
 
 

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