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Groundwater Levels - December 2010
The groundwater section of the Monthly Water Report is updated on a quarterly basis. The next update will be March 2011.
A new approach to determining trends was adopted in the December 2009 report. This approach recognises changes in season and distinguishes between short and long term trends.
Groundwater level trends in Water Supply Protection Areas (WSPAs) and Groundwater Management Areas (GMAs) as of December 2010 are summarised below.
- Groundwater levels are declining in the short term (< 5 years) for 11 of the 23 WSPAs.
- Groundwater levels for the long term trends (>10 years) are declining for 9 of the WSPAs.
- Groundwater levels are increasing in the short term (< 5 years) for 2 of the 23 WSPAs.
- In the remaining WSPAs, groundwater levels are stable.
- Management Plans either have been prepared or are being prepared in 12 WSPAs with Management Plans completed for Warrion and Koo Wee Rup in August 2010. Local Management Rules are now in place in the Mid Loddon WSPA.
- Of the 38 GMAs, groundwater levels are categorised as declining in the short term (< 5 years) in 14 areas, stable in 15 areas, and there is insufficient information (through lack of state observation bores) to determine a trend in the remaining 9 areas.