DEECA Victorian Water Accounts 2022-23

About the area

The Colongulac Groundwater Management Area (GMA) covers a basalt aquifer with some sands to the south of Lake Colongulac, where it partially overlies the South West Limestone GMA.

The water authority responsible for managing groundwater in the Colongulac GMA is Southern Rural Water.

The Colongulac GMA Local Management Plan applies to groundwater resources for all formations up to a depth of 60 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, Colongulac GMA

Groundwater management unit ^{1, 2}		2021-22	2022-23
Groundwater management area
Colongulac		Stable	Declining	Stable	Stable	Stable	Rising	Rising	Stable

Groundwater management unit ^{1, 2}		2021-22	2022-23
Groundwater management area
Colongulac		Stable	Declining	Stable	Stable	Stable	Rising	Rising	Stable

Groundwater restrictions

There were no restrictions on licensed use in the Colongulac GMA in 2022-23.

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, Colongulac GMA

Use type	2021-22 (ML)	2022-23 (ML)
Licensed use (non-urban)	4,401	4,400
Total	4,401	4,400

Use type	2021-22 (ML)	2022-23 (ML)
Licensed use (non-urban)	4,401	4,400
Total	4,401	4,400

Available water and use

The table below shows the total water available and used under entitlements, and estimated domestic and stock use in 2022-23. Total water available under entitlements is the sum of opening carryover, allocation issued and the net trade in or out 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 How we account for groundwater.

Table 3: Groundwater availability and use, Colongulac GMA

Use type	Available water (ML)	Water taken (ML)
Licensed use (non-urban)	0	4,401	0	4,401	573
Domestic & Stock	-	-	-	-	71
Total 2022-23	0	4,401	0	4,401	644
Total 2021-22	0	4,404	0	4,404	1,139

Use type	Available water (ML)	Water taken (ML)
Licensed use (non-urban)	0	4,401	0	4,401	573
Domestic & Stock	-	-	-	-	71
Total 2022-23	0	4,401	0	4,401	644
Total 2021-22	0	4,404	0	4,404	1,139

Compliance

Compliance against water entitlements is reported for this groundwater management unit (GMU) in 2 areas:

entitlement issued: that the volume of entitlements issued in the GMU does not exceed relevant permissible consumptive volumes (PCVs) or has not increased without appropriate approvals
water extracted: that 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

Volume in catchments did not exceed PCVs

The volume of entitlements (4,400 ML) in the Colongulac GMA did not exceed the PCV (4,695 ML).

Total volume extracted under licences was within the available volume

The total volume extracted under licences (573 ML) was within the volume available for the year (4,401 ML).

Table 4: PCV vs total entitlement volumes, Colongulac GMA

Groundwater management unit		PCV	Licensed entitlement (ML)	Water available under licences (ML)	Water taken under licences (ML)
Colongulac GMA		4,695	4,400	4,401	573

Groundwater management unit		PCV	Licensed entitlement (ML)	Water available under licences (ML)	Water taken under licences (ML)
Colongulac GMA		4,695	4,400	4,401	573

Management responsibilities

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

Authority	Management responsibilities
Southern Rural Water	Managing groundwater resources. Developing and implementing groundwater management plans. Issuing licences for groundwater use, bore construction, and surface water diversions. Administering water for domestic and stock use.

Authority

Management responsibilities

Southern Rural Water

Managing groundwater resources.

Developing and implementing groundwater management plans.

Issuing licences for groundwater use, bore construction, and surface water diversions.

Administering water for domestic and stock use.

Nearby groundwater management units

Paaratte GMA

Explore the Paaratte Groundwater Management Area (GMA).

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South West Limestone GMA

Explore the South West Limestone Groundwater Management Area (GMA).

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Colongulac GMA

On this page:

In this area

About the area

Groundwater level trends

Table 1: Groundwater level trends, Colongulac GMA

Groundwater restrictions

Entitlements and use

Entitlement volumes

Table 2: Groundwater entitlements at 30 June, Colongulac GMA

Available water and use

Table 3: Groundwater availability and use, Colongulac GMA

Compliance

Key points on compliance against entitlements

Volume in catchments did not exceed PCVs

Total volume extracted under licences was within the available volume

Table 4: PCV vs total entitlement volumes, Colongulac GMA

Management responsibilities

Nearby groundwater management units

Paaratte GMA

South West Limestone GMA

Back to groundwater map

Victorian Water Accounts 2022-23

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Groundwater management unit ^{1, 2}	2021-22				2022-23
Groundwater management unit ^{1, 2}	Sep-21	Dec-21	Mar-22	Jun-22	Sep-22	Dec-22	Mar-23	Jun-23
Groundwater management area
Colongulac	Stable	Declining	Stable	Stable	Stable	Rising	Rising	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	4,401	0	4,401	573
Domestic & Stock	-	-	-	-	71
Total 2022-23	0	4,401	0	4,401	644
Total 2021-22	0	4,404	0	4,404	1,139