DEECA Victorian Water Accounts 2021-22

About the area

The Orbost Groundwater Management Area (GMA) covers a shallow sand and gravel aquifer to the east of Orbost and centred on the Snowy River.
The water authority responsible for managing groundwater in the Orbost GMA is Southern Rural Water.
The Orbost GMA Local Management Plan applies to groundwater resources for all formations between 20 m to 45 m below the surface.
More information on groundwater management can be found on the Southern Rural Water website.

Groundwater level trends

Table 1: Groundwater level trends, Orbost GMA

Groundwater management unit ¹		2021-22	2020-21
Orbost		Declining	Stable	Rising	Rising	Declining	Declining	Stable	Stable

Groundwater management unit ¹		2021-22	2020-21
Orbost		Declining	Stable	Rising	Rising	Declining	Declining	Stable	Stable

Groundwater restrictions

There were no restrictions on licensed use for the Orbost 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, Orbost GMA

Use type	2021-22 (ML)	2020-21 (ML)
Licensed use (non-urban)	1,217	1,217
Total	1,217	1,217

Use type	2021-22 (ML)	2020-21 (ML)
Licensed use (non-urban)	1,217	1,217
Total	1,217	1,217

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 groundwater section.

Table 3: Groundwater availability and use, Orbost GMA

Use type	Available water (ML)	Water taken (ML)
Licensed use (non-urban)	0	1,217	0	1,217	18
Domestic & Stock	-	-	-	-	3
Total 2021-22	0	1,217	0	1,217	21
Total 2020-21	0	1,217	0	1,217	64

Use type	Available water (ML)	Water taken (ML)
Licensed use (non-urban)	0	1,217	0	1,217	18
Domestic & Stock	-	-	-	-	3
Total 2021-22	0	1,217	0	1,217	21
Total 2020-21	0	1,217	0	1,217	64

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 (1,217 ML) in the Orbost GMA did not exceed the PCV (1,217 ML).

Total volume extracted under licences was within the available volume

The total volume extracted under licences (18 ML) was within the volume available for the year (1,217 ML).

Table 4: PCV vs total entitlement volumes, Orbost GMA

Groundwater management unit		PCV	Licensed entitlement (ML)	Water available under licences (ML)	Water taken under licences (ML)
Orbost GMA		1,217	1,217	1,217	18

Groundwater management unit		PCV	Licensed entitlement (ML)	Water available under licences (ML)	Water taken under licences (ML)
Orbost GMA		1,217	1,217	1,217	18

Management responsibilities

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

Authority	Management 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.

Authority

Management 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.

Nearby groundwater management units

Stratford GMA

Explore the Stratford Groundwater Management Area (GMA).

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Upper Murray GMA

Explore the Upper Murray Groundwater Management Area (GMA).

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Orbost GMA

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In this area

About the area

Groundwater level trends

Table 1: Groundwater level trends, Orbost GMA

Groundwater restrictions

Entitlements and use

Entitlement volumes

Table 2: Groundwater entitlements at 30 June, Orbost GMA

Available water and use

Table 3: Groundwater availability and use, Orbost GMA

Compliance

Key points on compliance against entitlements

Entitlement volume did not exceed the PCV

Total volume extracted under licences was within the available volume

Table 4: PCV vs total entitlement volumes, Orbost GMA

Management responsibilities

Nearby groundwater management units

Stratford GMA

Upper Murray GMA

Back to groundwater map

Victorian Water Accounts 2021-22

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Groundwater management unit ¹		2021-22				2020-21
Groundwater management unit ¹		Sep-21	Dec-21	Mar-22	Jun-22	Sep-20	Dec-20	Mar-21	Jun-21
Orbost		Declining	Stable	Rising	Rising	Declining	Declining	Stable	Stable

Use type	Available water (ML)				Water taken (ML)
Use type	Carryover	Licensed volume allocated	Net trade	Total water available	Water taken (ML)
Licensed use (non-urban)	0	1,217	0	1,217	18
Domestic & Stock	-	-	-	-	3
Total 2021-22	0	1,217	0	1,217	21
Total 2020-21	0	1,217	0	1,217	64