Sample location: upstream of the basin

Dry weight: 1500 g

1

2

3

4

5

6

7

Sieve size (mm)

Mass of each sieve (g)

Mass of each sieve + retained soil

Mass retained

Wi (g)

%retained on each sieve Pi = (Wi/Wt) * 100

Cumulative

%retained Rj = ∑Pi

%finer

Nj = 100 − ∑Rj

3.35

484.7

539.7

55

3.666

3.666

96.334

2

444.7

559.9

115.2

7.68

11.346

88.654

1.18

418.7

479.3

60.6

4.04

15.386

84.654

0.6

400

511.4

111.4

7.426

22.812

84.614

0.425

378.3

643.7

265.4

17.693

40.505

77.188

0.212

340.2

1182.7

842.5

56.166

96.671

59.495

0.15

327

369.6

42.6

2.84

99.511

3.329

0.075

310.5

316.6

6.1

0.406

99.917

0.489

Pan

386.7

387.9

1.2

0.08

100

0

Total

1500

100