Groundwater Flow System converted to a grid (20m)

dataset: GFS20
1:250,000 Groundwater Flow System layer converted to a grid based on DEM25
 
Citation proposal Citation proposal

(2007)

Groundwater Flow System converted to a grid (20m)

Department of Environment, Land, Water & Planning

Description

Title
Groundwater Flow System converted to a grid (20m) 
Alternate title
GFS20 
Purpose
Environmental modelling. 
Credit
Sam Ebert, DSE Wodonga Craig Hamilton, DSE Wodonga Terry McLLean, DPI Rutherglen 
Supplemental Information
Relationship to other Datasets: The layer is derived using ESOCLIM and DEM250. For a given area one can expect high correlations between RAIN<month> and DEM250 Current Design Issues: The layer is a raster dataset, ie. a GRID. To reduce disk storage it is stored as an integer value grid with precision maintained to two decimal places using: value = mm/annum * 100. Future Design Issues: As DEM250 is replaced by a higher resolution DEM it may be appropriate to re-calculate the rainfall estimates. For specific areas it will be appropriate to use additional rainfall data to update the ESOCLIM surfaces and generate higher resolution rainfall estimates. Layer design should be revised at that time. Related Documents: None ESOCLIM documentation (CLIM_GRD.DOC) ANUCLIM Users Guide 
Status
Completed 
 
 

Spatial

Horizontal Accuracy
100m 
Code
4283 
 
 

Maintenance

Maintenance and update frequency
Irregular 
 
 

Format

Title
DIGITAL Arc/Info Revision 7 Grid library 2 
 
 

Contacts

  Point of contact

Cited responsible party

No information provided.

Cited responsible party

No information provided.

Cited responsible party

No information provided.
 
 

Keywords

Topic category
  • Biota
 
 

Resource Constraints

Use limitation
Available under licence 
Classification
Unclassified 
License type
DELWP Data License 
Website
 

License Text

License type
Restricted 
 
 

Lineage

Statement
Dataset Source: For information relating to this data set please refer to the existing metadata information for GFS250. Dataset Originality: Derived 
Description
GFS250 was converted to a grid based on DEM25 utilising ArcInfo Workstation 
 
 

Metadata Constraints Metadata Constraints

Classification
Unclassified 
 
 

Quality

Attribute Quality
Comments
Normally claimed to be within 5% of the actual value. This is based on a generalised cross-validation algorithm which carries out the original interpolation without each point in turn, and compares the interpolated value at that point with the observed value. 
 
Positional Accuracy
Comments
Precision: 10-100m Determination: Based on the input map scale for the data underpinning DEM250. 
 
Conceptual Consistency
Missing Data
Comments
Complete for the state. Complete for all Victorian Catchment Management Authority (CMA's) areas. 
 
Excess Data
 
 

Overviews

Graphic Overview of Data Footprint


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