DEECA

About the area

  • The Wandin Yallock Groundwater Management Area (GMA) covers a basalt aquifer to the east of Melbourne.
  • The water authority responsible for managing groundwater in the Wandin Yallock GMA is Southern Rural Water.
  • The Wandin Yallock GMA Local Management Plan applies to groundwater resources for all formations below the surface.
  • More information on groundwater management can be found on the Southern Rural WaterExternal Link website.

Table 1: Groundwater level trends, Wandin Yallock GMA

Groundwater restrictions

There were no restrictions on licensed use for the Wandin Yallock GMA in 2021-22.

Entitlements and use

Groundwater is available for licensed (non-urban) supply and for domestic and stock use.

Entitlement volumes

Table 2: Groundwater entitlements at 30 June, Wandin Yallock GMA

Available water and use

The table below shows the total water available and used under entitlements, and estimated domestic and stock use in 2021-22. Total water available under entitlements is the sum of: opening carryover, allocation issued and the net of the in/out trade of water.

Estimated domestic and stock use is calculated based on an assumed usage per registered bore per year. In this GMA, 1.5 ML usage per bore per year is assumed.

More information on groundwater use and availability has been detailed in the How do we account for groundwaterExternal Link section.

Table 3: Groundwater availability and use, Wandin Yallock GMA

Compliance

Compliance against water entitlements is reported for this groundwater management unit (GMU) in two areas:

  • entitlement issued: the volume of entitlements issued in the GMU does not exceed relevant PCVs or has not increased without appropriate approvals
  • water extracted: the volume of water taken under entitlements during the year does not exceed the total water available to licence holders.

Key points on compliance against entitlements

Entitlement volume did not exceed the PCV

The volume of entitlements (3,025 ML) in the Wandin Yallock GMA did not exceed the PCV (3,027 ML).

Total volume extracted under licences was within the available volume

The total volume extracted under licences (457 ML) was within the volume available for the year (3,025 ML).

Table 4: PCV vs total entitlement volumes, Wandin Yallock GMA

Management responsibilities

Management of water in the Wandin Yallock GMA is undertaken by Southern Rural Water.

AuthorityManagement responsibilities
Southern Rural Water
  • Manages groundwater resources.
  • Developing and implementing groundwater management plans.
  • Issues licences for groundwater use, bore construction, and surface water diversions.
  • Administers domestic and stock use.