VAF_EXTENT_109LMTA

dataset: VAF_EXTENT_109LMTA
This dataset relates to the Victorian Aquifer Framework (VAF) 3D Surface for the Lower Mid Tertiary Aquifer. It represents the mapped extent of the aquifer. Please refer to the master metadata record VAF 'Victorian Aquifer Framework (VAF) 3D Surfaces' for detailed information.
 
Citation proposal Citation proposal

(2022)

VAF_EXTENT_109LMTA

Department of Environment, Land, Water & Planning

Description

Title
VAF_EXTENT_109LMTA 
Alternate title
VAF_EXTENT_109LMTA 
Supplemental Information
Related Documents: None 
Status
Completed 
 
 

Spatial

Code
4283 
 
 

Maintenance

Maintenance and update frequency
As needed 
 
 

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
  • Inland waters
  • Geoscientific information
 
 

Constraints

Use limitation
General 
Classification
Unclassified 
Creative Commons Attribution 4.0 (CC-BY)
 
 

Lineage

Statement
Dataset Source: Data were obtained from the Victorian Stratigraphic Database and included: (1) salinity readings from register bores (such as stock and domestic, licensed and observation bores); (2) the date of each salinity reading; (3) bore locations (coordinates). In addition, pre-existing watertable salinity data was obtained from a project conducted by Southern Rural Water. This dataset was used for Catchment Management Areas (CMAs) south of the divide. For the northern portion of the State, bore data were input into the surface modelling utility ANUDEM. To identify the data to be used as input, a point representing the screened interval of the bore was calculated. The established screen location was then compared to the watertable depth compiled as part of the Victorian Watertable Mapping project. Screen locations within 30m of the watertable depth were adopted as watertable bores. Only those bores with salinity readings taken on or after January 1 1980 were used as input. The next step in the process involved creating a series of draft watertable salinity maps using the bore data and contours and visually assessing areas for review. This assessment also involved evaluating the residual values or difference between the modelled surface and the original bore inputs. All residuals greater than 250 were identified and resolved. The resultant model was then merged with the SRW data. A final dataset containing Total Dissolved Solids (TDS) concentrations in mg/L was then produced using the following classes: <500, 500-1000, 1000-3500, 3500-7000, 7000-13000,13000-35000, >35000. Dataset Originality: Derived 
 
 

Metadata Constraints Metadata Constraints

Classification
Unclassified 
 
 

Quality

Attribute Quality
Comments
Attribute values are as accurate as the attributes of the source data used to derive the final dataset. 
 
Positional Accuracy
Comments
The dataset is as accurate as the data from which it has been derived. These source datasets include: (1) the SRW watertable salinity layer; (2) the Victorian Stratigraphic Database; (3) borehole locations from GMS. 
 
Conceptual Consistency
Comments
Not known 
 
Missing Data
Comments
Victoria 
 
Excess Data
 
 

Overviews

Graphic Overview of Data Footprint


Provided by

Share on social sites