About the area
- The Nepean Groundwater Management Area (GMA) covers a shallow sand aquifer extending from Rosebud to Point Nepean National Park.
- The water authority responsible for managing groundwater in the Nepean GMA is Southern Rural Water.
- The Nepean GMA Local Management Plan applies to groundwater resources between the natural surface and 200 m below the natural surface.
- More information on groundwater management can be found on the Southern Rural website.
Groundwater level trends
Table 1: Groundwater level trends, Nepean GMA
Groundwater restrictions
There were no restrictions on licensed use for the Nepean 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, Nepean 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 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 section.
Table 3: Groundwater availability and use, Nepean 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 (6,110 ML) in the Nepean GMA did not exceed the PCV (6,110 ML).
Total volume extracted under licences was within the available volume
The total volume extracted under licences (3,129 ML) was within the volume available for the year (6,109 ML).
Table 4: PCV vs total entitlement volumes, Nepean GMA
Management responsibilities
Management of water in the Nepean GMA is undertaken by Southern Rural Water.
| Authority | Management responsibilities |
|---|---|
| Southern Rural Water |
|
