No. | Parameter | Score | |||
1 | 3 | 6 | 10 | ||
1 | Total Suspended Solids (ppm) [30] | <20 | >20 - 100 | 101 - 400 | >400 |
2 | Turbidity (NTU) [11] | <15 | 15 - 30 | 30 - 45 | >45 |
3 | Total Nitrogen in sediment (ppm) [31] | <2 | >2 - 4 | >4 - 6 | >6 |
4 | Total Phosphate (ppm) [32] | <0.5 | >0.5 - 1 | >1 - 2 | >2 |
5 | C-Organic (%) [19] | >30 | 20 - 30 | 10 - 20 | <10 |
6 | Gravel (%) [19] | >20 | >10 - 20 | 5 - 10 | <5 |
7 | H’ (Diversity index) [30] | >2.5 | 1.5 - 2.5 | 1 - 1.5 | <1 |