| Balance ratio both zones | |||
| Month | Year 2004-2005 | Year 2005-2006 | Volume of estimated recharge (MCM) |
| December | 2006/3 | 0.235 | 2003/3 |
| January | 2007/1 | 0.658 | 2003/11 |
| February | 2007/3 | 0.695 | 2003/12 |
| March | 2009/10 | 3.712 | 2004/1 |
| April | 2009/12 | 0.575 | 2004/12 |