Geology Reference
In-Depth Information
Table 9.6
Watershed daily storm output for all runoff events in Year 170 for moldboard plough management.
Day
Month
Year
Precipitation depth (mm)
Runoff volume (m
3
)
Peak runoff (m
3
s
−
1
)
Sediment yield (kg)
9
4
170
30
784
0.4
7614
16
4
170
55
15,072
4.7
595,893
17
4
170
57
25,489
6.1
1,014,696
2
5
170
21
912
0.7
21,764
12
5
170
26
5538
1.6
133,525
21
5
170
26
6866
1.7
146,379
27
5
170
19
2665
1.3
13,962
17
6
170
36
1143
0.6
2863
23
6
170
24
504
0.3
891
25
6
170
24
797
0.4
1130
26
6
170
78
35,729
9.7
999,330
28
6
170
19
1223
0.5
1132
25
9
170
22
1574
1.2
5529
26
9
170
16
1265
0.6
2222
27
9
170
14
1339
0.6
2019
11
10
170
74
35,350
8.8
1,214,482
12
10
170
222
135,796
21.3
4,996,518
13
10
170
199
122,286
22.8
4,447,701
22
10
170
219
118,833
19.5
4,735,493
6
11
170
33
11,840
3.0
279,951
8
11
170
14
57
0.0
794
10
11
170
25
7429
1.2
30,832
9
12
170
16
668
0.3
1720
Table 9.7
Sediment yield for the day, month and year when maximum daily sediment yield occurred,
for each management.
Sediment yields for managements
Sediment yield period
Moldboard plough (t ha
−
1
)
Chisel plough (t ha
−
1
)
No-till (t ha
−
1
)
Grass (t ha
−
1
)
Sediment yield on:
21 October, year 60
74
60*
3.4
3.0
12 October, year 170
77*
33
2.5
3.4
26 August, year 212
20
20
6.3*
2.7
13 October, year 650
65
32
5.0
4.1*
Sediment yield in:
October, Year 60
166
134
10.4
9.1
October, Year 170
238
125
7.5
7.9
August, Year 212
23
23
6.9
3.2
October, Year 650
65
33
5.0
4.1
Sediment yield in:
Year 60
228
195
18.8
13.4
Year 170
288
170
9.7
9.1
Year 212
99
88
13.0
6.3
Year 650
91
57
6.7
5.1
* Maximum daily sediment yield over the 1000-year simulation.
