Stocks (assets)
Flows (benefits)

Quantity of environmental asset

Quality of environmental asset

Natural gas extracted

Natural gas extracted - monetary value

Units

Volume, e.g. cubic metres (m³)

Example methods / guidance / references

What are tiers?

Tier 1

Estimate using own judgement and observations

Tier 2

Estimate using third-party professional estimates or public data

Tier 3

Model or measure based on site-specific surveys/sampling, remote or in-field sensing, laboratory analysis, etc.

Example data sources

Internal records

Third-party data sources

Data on annual production of natural gas resources in Australia by basin are available in the latest version of Australia’s Energy Commodity Resources.

Site-specific measurements or model outputs

Notes

Work in progress - Feedback welcome

Units

Currency, e.g. A$

Example methods / guidance / references

What are tiers?

Tier 1

Multiply physical flow quantity by estimated monetary value per unit

Tier 2

Multiply physical flow quantity by estimated monetary value per unit

Tier 3

Multiply physical flow quantity by estimated monetary value per unit

Example data sources

Internal records

Third-party data sources

Site-specific measurements or model outputs

Notes

Work in progress - Feedback welcome

Units

Various

Example methods / guidance / references

What are tiers?

Tier 1

Estimate using own judgement and observations

Tier 2

Estimate using third-party professional estimates or public data

Tier 3

Model or measure based on site-specific surveys/sampling, remote or in-field sensing, laboratory analysis, etc.

Example data sources

Internal records

Third-party data sources

Third-party data sources

Notes

Work in progress - Feedback welcome

Units

Volume, e.g. cubic metres (m³)

Example methods / guidance / references

What are tiers?

Tier 1

Estimate using own judgement and observations

Tier 2

Estimate using third-party professional estimates or public data

Tier 3

Model or measure based on site-specific surveys/sampling, remote or in-field sensing, laboratory analysis, etc.

Example data sources

Internal records

Third-party data sources

Maps showing the locations of gas fields in Western Australia and Victoria are available at the National Map (select layers: Oil and Gas Fields [for Victoria]); Oil and Gas Fields (DMIRS-089) [for Western Australia]). Data on quantities of natural gas resources in Australia by basin are available in the latest version of Australia’s Energy Commodity Resources. 

Site-specific measurements or model outputs

Notes

Work in progress - Feedback welcome