| Nutrient/Year | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 |
| TP | 1.3 | 1.6 | 1.2 | 0.8 | 0.4 | 1.2 |
| TN | 15.1 | 47.0 | 31.0 | 68.5 | 19.0 | 27.3 |
| NO3 | 5.4 | 15.6 | 13.0 | 50.9 | 8.0 | 3.3 |
| NH4 | 1.3 | 16.8 | 3.3 | 3.4 | 0.3 | 7.2 |
| SO4 | 1968 | 1153 | 1763 | 1848 | 134 | 956 |