From Geoscience Australia
JSON format icon JSON RDF format icon RDF ISO19115-3 XML

Geophysical survey of the Trevallyn Tunnel line, Launceston, Tasmania

Created 17/10/2025

Updated 17/10/2025

JSON format icon JSON RDF format icon RDF ISO19115-3 XML

At the request of the Tasmanian Hydro-Electric Commission a geophysical survey was carried out along a tunnel line at Trevallyn, a suburb of Launceston, North Eastern Tasmania. The excavation of the Trevallyn tunnel is part of the Hydro-Electric Trevallyn Power Development project to utilise the water of the South Esk river for generation of electric power. The construction works are already well advanced. A dam is being built on the river at the Second Basin. Water from the catchment will be diverted through a tunnel two miles long to a power station situated at sea level on the Tamar River. A locality map is given in Plate 1. Three geophysical exploration methods, electrical, seismic and gravitational, were used to locate deeply weathered and fractured zones in the dolerite bedrock, through which the tunnel is being driven.

Files and APIs

Tags

Additional Info

Field Value
Title Geophysical survey of the Trevallyn Tunnel line, Launceston, Tasmania
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/ebb737f7-1028-4335-a828-fdd48fe3ad0a
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 22/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        147.0,
        -41.5
      ],
      [
        147.2,
        -41.5
      ],
      [
        147.2,
        -41.3
      ],
      [
        147.0,
        -41.3
      ],
      [
        147.0,
        -41.5
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Geophysical survey of the Trevallyn Tunnel line, Launceston, Tasmania". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/geophysical-survey-of-the-trevallyn-tunnel-line-launceston-tasmania