Groundwater Management Unit
Groundwater Management Unit: Glengower
Introduction
The groundwater resource characteristics for the Glengower groundwater managment unit are presented below. This includes technical detail on aquifer properties and water level change for key monitoring bores.
What is the character of Glengower's groundwater resource?
Vital Statistics:
| Area | 511 km2 |
|---|---|
| Total Water Allocated | no data |
| Total Water Used | no data |
| Average Salinity | 2,040 mg/L |
| Sustainable Yield | 6,550 ML/yr |
| Depth to top of aquifer | 65 m |
Unconfined to semi-confined sedimentary deep leads gravel aquifer
Method used for determining sustainable yield:
The process of aquifer recharge and groundwater flow throughout the Glengower GMA is complex. In the absence of hydraulic information, the PAV may only be determined on the basis of a number of assumptions.
The PAV developed for the deep lead in the Glengower GMA has been calculated at 6,550 ML/year. This figure has been based on conservative hydraulic principles that are not considered to sufficiently account for the complex interaction of surface and groundwater processes within the GMA. This figure represents a continuous pumping rate of 207 litres per second applied over the deep lead system within the GMA boundary.
A significant proportion of the groundwater throughflow into the deep lead in the Glengower GMA is derived from throughflow from the deep lead systems in the up gradient GMAs of Tourello and Bullarook. The PAV for the Glengower GMA is based on the volume of groundwater throughflow remaining after the throughflows volumes in the GMAs upgradient direction are removed.
Assumptions used for allocating development categories:
Groundwater categorisation was assessed in terms of the requirements of the audit documentation. Information applied to the categorisation of both abstractions and allocations was based on the best information available from a combination of information supplied by the responsible Rural Water Authority and information from the Groundwater Database.
Forward projections of abstraction were based on a combined surface and groundwater demand evaluation model. This model projected potential demand for water based on predictions of population growth, industry development, agricultural development and water consumption trends.
Are groundwater levels changing?
Technical information on the key groundwater bores and monitoring stations is presented below, including hydrographs where available. Link to a discussion on groundwater levels and trends at a State level as it relates to dryland salinity.
| Bore ID | Start record | End record | Depth of bore (m) | Reduced level (m) |
|---|---|---|---|---|
| VIC92124 | 13-Nov-79 | 25-Jul-00 | 57 | 213 |
| VIC92128 | 13-Nov-79 | 25-Jul-00 | 25 | 212 |
The following groundwater management units also occur in Lachlan Province:
- Alexandra (VIC)
- Araluen Alluvium and Weathered Granite (NSW)
- Ascot (VIC)
- Bell Valley Alluvium (NSW)
- Belubula River Alluvium (NSW)
- Billabong Creek Alluvium (NSW)
- Bullarook (VIC)
- Bungaree (VIC)
- Cudgegong Valley Alluvium (NSW)
- King Lake (VIC)
- Lancefield (VIC)
- Lower Macquarie Alluvium (NSW)
- Mid Murrumbidgee Alluvium (NSW)
- Mid and Upper Murrumbidgee Catchment Fractured (NSW)
- Molong Limestone (NSW)
- Moolort (VIC)
- Mudgee Limestone (NSW)
- Murrumbidgee (ACT)
- Namadgi (ACT)
- Orange Basalt (NSW)
- Queanbeyan and Molonglo (ACT)
- Spring Hill Groundwater Supply Protection Area (VIC)
- Tourello (VIC)
- Unincorporated Area - Lachlan (VIC)
- Unincorporated Area - Lachlan Fold Belt Province (NSW)
- Upper Lachlan Alluvium (NSW)
- Upper Macquarie Alluvium (NSW)
- Wandin Yallock (VIC)
- Young Granite (NSW)
Further information
- Victoria Water Resources Assessment 2000 Report
- Victoria Water Resources Assessment 2000 Technical Report
- For more information about water and other natural resource issues link to www.dse.vic.gov.au .
- Link to data available for download on the Groundwater management units and provinces - ARC/INFO export
- Link to Map maker to make a map using this information.
Key
Links to an another web site
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