| Discharge auto-correlation | |||
| Year | Lag 1 | Lag 2 | Lag 3 |
| 2000 | 0.94 | 0.86 | 0.81 |
| 2001 | 0.97 | 0.93 | 0.89 |
| 2002 | 0.98 | 0.95 | 0.91 |
| 2003 | 0.98 | 0.95 | 0.93 |
| 2004 | 0.97 | 0.93 | 0.88 |
| 2005 | 0.98 | 0.94 | 0.90 |
| 2006 | 0.98 | 0.94 | 0.91 |
| 2007 | 0.95 | 0.91 | 0.86 |
| 2000-2007 | 0.97 | 0.93 | 0.88 |