| Precipitation Volume (m3) | Needs (m3) | V - N | |
| September | 3262.50 | 12,629.17 | 9366.67 |
| October | 9085.00 | 8740.28 | 344.72 |
| November | 16,855.00 | 5454.17 | 11,400.83 |
| December | 14,785.00 | 3887.92 | 10,897.08 |
| January | 15,720.00 | 3707.08 | 12,012.92 |
| February | 12,272.50 | 4192.22 | 8080.28 |
| March | 12,050.00 | 6118.19 | 5931.81 |
| April | 12,030.00 | 7670.83 | 4359.17 |
| May | 6515.00 | 10,488.33 | 3973.33 |
| June | 1787.50 | 14,495.83 | 12,708.33 |
| July | 160.00 | 19,439.58 | 19,279.58 |
| August | 412.50 | 18,173.75 | 17,761.25 |