Type of sediment

Sediment size (mm)

% of upstream sediment

% of inlet sediment

% of sediment removed by the headwork

gravel

above 2

11.346

0.212

11.134

sand

coarse

0.6 - 2

11.466

6.222

5.246

medium

0.2 - 0.6

73.859

82.379

8.85

fine

0.06 - 0.2

3.329

11.183

7.854

The total percentage of sediment removed by the head work: 33%