The groundwater section of the Monthly Water Report is updated quarterly. Information gathered through monitoring enables us to make informed water resource management decisions. In Victoria, data is collected from about 1,400 groundwater sites from the State Observation Bore Network (SOBN). Groundwater level trends for GMUs have been determined based on five or (where available) 10 years' consistent monitoring data from key bores in the State Observation Bore Network (SOBN). Go to the DELWP website for more information on SOBN and GMUs.

Groundwater is reported quarterly; this update is for the 1 January to 31 March quarter. The next update will be included in the June monthly report for the 1 April to 30 June quarter.

At the end of the March 2019 quarter, the short term (<5 years) groundwater level trends in the 11 Water Supply Protection Areas (WSPAs) were categorised as:

  • declining for six
  • stable for five

Over the long term (>10 years), groundwater level trends in WSPAs were categorised as

  • rising for three
  • declining for four and
  • stable for four.

Of the 44 Groundwater Management Areas (GMAs) in Victoria, groundwater levels in the short term (<5 years) were categorised as:

  • rising in one areas,
  • declining in 25 areas and
  • stable in 14 areas.
  • There was insufficient information (through lack of state observation bores) to determine a trend in the remaining four areas.

Over the long term (>10 years), groundwater level trends in the GMAs were categorised as:

  • stable for 23 areas
  • declining in nine areas and
  • rising in four.
  • There is insufficient information to determine a trend in the remaining eight areas.

WSPA groundwater level trends for the March 2019 quarter

WSPA groundwater level trends for the March 2019 quarter

GMA groundwater level trends for the March 2019 quarter

GMA groundwater level trends for the March 2019 quarter