Victorian Aquifer Framework - Upper Tertiary / Quaternary Basalts - Depth to Aquifer Base (mAHD)

Base of Upper Tertiary / Quaternary Basalts - UTB - 101 -

The depth to the base of the aquifer layer is derived in relation to the Australian Height Datum in metres (mAHD). 

The Victorian Aquifer Framework (VAF) was developed by the Department of Sustainability and Environment (DSE, now DELWP) to provide a consistent approach to defining, naming and numbering the commonly accepted aquifers, aquitards and geological layers that make up Victoria's groundwater systems. It is intended to assist in the sustainable management of groundwater resources in Victoria and provide the framework for mapping aquifers and aquitards across the State.

The 3D numeric surfaces (grids) of each layer have been styled and converted to GeoTIFF by the VVG project to optimise them for display and querying on the web. 


Acronym for ‘metres above Australian Height Datum’.  The AHD is the 00.00m surface level established across Australia as a universal reference surface in 1971. When expressed as a negative (i.e.  -51 mAHD) it suggests a depth beneath the AHD, as in ’51 metres below the AHD’.  For further information:

Data and Resources

Additional Info

Field Value
Last Updated April 4, 2018, 22:09 (AEST)
Created March 27, 2018, 14:33 (AEDT)
ANDS RDA Harvest? true
Data created 2013-09-05 00:00:00
Data custodian Andrew Macleod
Data custodian email
Data custodian organisation CeRDI
Data custodian position Manager, Technical Projects
Data modified 2017-09-09 00:00:00
More information Victorian Aquifer Framework (VAF) 3D Surfaces Metadata
Originating source Victorian Aquifer Framework (VAF) 3D Surfaces
Owner email
Owner organisation Department of Environment, Land, Water & Planning
Owner position Dataset Data Manager
Queryable? Yes

Creative Commons Attribution 4.0 International CC-BY

spatial { "type":"Polygon", "coordinates":[[[140.51296726866, -33.842029356458],[140.51296726866, -39.210234395668], [150.20390243512, -39.210234395668], [150.20390243512, -33.842029356458], [140.51296726866, -33.842029356458]]] }

Dataset extent

Map data © OpenStreetMap contributors