| System | Period | Drainage | Nitrate-N leaching loss | FWMN concentration | ||
| mm | % | kg ha−1 | % | mg L−1 | ||
| CP | Jan. 1—Mar. 31 | 849 (212) | 27 | 43 (9) | 15 | 5.2 (0.2) |
| Apr. 1—Jun. 30 | 1827 (238) | 57 | 213 (6) | 73 | 11.8 (1.2) | |
| Jul. 1—Sep. 30 | 272 (19) | 9 | 34 (9) | 11 | 12.2 (2.3) | |
| Oct. 1—Dec. 31 | 242 (31) | 8 | 13 (9) | 1 | 4.8 (3.2) | |
| NT | Jan. 1—Mar. 31 | 464 (19) | 20 | 38 (16) | 14 | 8.3 (3.8) |
| Apr. 1—Jun. 30 | 1357 (120) | 60 | 196 (32) | 75 | 14.8 (3.7) | |
| Jul. 1—Sep. 30 | 251 (69) | 11 | 30 (3) | 10 | 13.0 (4.6) | |
| Oct. 1—Dec. 31 | 194 (38) | 9 | 13 (9) | 1 | 7.9 (6.2) | |
| PR | Jan. 1—Mar. 31 | 186 (6) | 19 | 0.06 (<0.01) | 14 | 0.03 (<0.01) |
| Apr. 1—Jun 30 | 586 (56) | 60 | 0.32 (0.06) | 74 | 0.05 (<0.01) | |
| Jul. 1—Sep. 30 | 92 (7) | 9 | 0.03 (<0.01) | 7 | 0.03 (<0.01) | |
| Oct. 1—Dec. 31 | 113 (26) | 12 | 0.02 (<0.01) | 5 | 0.02 (<0.01) | |