Source CODmn (t/yr) Percentage (%) NH3-N (t/yr) Percentage (%) TP(t/yr) Percentage (%)
Diffuse 6119 70 749 78 317 49
Point 2640 30 211 22 334 51
Total 8759 100 961 100 651 100
Table 4: Loads of COD NH3-N and TP entering study area.