| Date | Original Water Levels | Forecasted water levels | Error % |
| 12/04 | 622.33 | 620.03 | 0.37 |
| 01/05 | 619.42 | 617.68 | 0.28 |
| 02/05 | 616.26 | 615.72 | 0.09 |
| 03/05 | 612.14 | 613.61 | −0.24 |
| 04/05 | 607.29 | 610.29 | −0.5 |
| 05/05 | 601.13 | 606.74 | −1.0 |
| 06/05 | 595.9 | 601.88 | −1.0 |
| 07/05 | 614.6 | 599.04 | 2.6 |
| 08/05 | 626.35 | 626.86 | −0.04 |
| 09/05 | 626.57 | 629.46 | 0.16 |
| 10/05 | 626.73 | 622.41 | 0.69 |
| 11/05 | 626.62 | 622.11 | 0.72 |
| 12/05 | 624.31 | 621.99 | 0.37 |
| 01/06 | 621.98 | 619.46 | 0.41 |
| 02/06 | 629.63 | 618.13 | 2.45 |
| 03/06 | 615.52 | 628.12 | −2.04 |