Salinity and yield of groundwater in Port Phillip & Western Port
Where salinity is low and yield is high
How much fresh water is stored in aquifers across the region?
Fresh water = salinity less than 1,000 mg/L
It is estimated that a total of 3,660 GL of fresh water is stored across the region: 660 GL in the upper
What is the quality and yield like in local areas?
Salinity (quality) and yield vary greatly across the region. They depend on where you are and which aquifer group you are using. To get an accurate indication of the quality and yield you can expect on your property you need to drill a bore and have the water tested.
To view this information on a map visit the Port Phillip & Western Port region map or you can download or print a summary of the likely salinity and yield of groundwater near your property on the Department of Environment, Land, Water and Planning website.
Salinity and yield by local area
|Aquifer group||GMU or area||Salinity||Yield|
|Lancefield GMU||Very good||Moderate|
|Nepean GMU||Very good||Very good|
|West of Melbourne (non GMU area)||Very poor||Good|
|North of Melbourne (non GMU area)||Moderate||Poor|
|East of Melbourne (non GMU area)||Moderate||Poor|
|South-East of Melbourne (non GMU area)||Moderate||Good|
|Koo Wee Rup GMU||Good||Very good|
|Western Plains (west of Melbourne)||Poor||Poor|
|Lower||Wandin Yallock GMU||Very good||Moderate|
|Cut Paw Paw (GMU)||Poor||Very good|
|Parwan (below Merrimu GMU)||Good||Good|
|The Highlands (non GMU)||Good||Poor|
|Mornington Peninsula (below Nepean GMU)||Moderate||Good|
|South-East of Melbourne (non GMU)||Moderate||Good|
|West of Melbourne (non GMU)||Poor||Good|
This table shows a summary of the likely salinity and yield in different areas and aquifer groups.
Learn the basics
For background information on salinity visit our What is groundwater salinity page.
For background information on yield visit our What is groundwater yield page.