Type of sediment

Sediment size (mm)

% finer of the sediment at outlet of basin

% of inlet sediment

% of sediment removed by the sediment basin

gravel

Above 2 mm

0

0.166

0.166

sand

coarse

2 - 0.6

0

6.266

6.266

medium

0.6 - 0.2

77.97

82.522

4.552

fine

0.2 - 0.06

21.698

11

10.698

Total percentage of sediment removed by the basin: 21.676 say 22%