Geoscience Reference
In-Depth Information
Table 11.5.
Changes in Hydro-meteorological Parameters of the Dabaka Watershed due to Climate Change and Land use Degradation.
Study
Periods
Hydro-
meteorological
Parameters
Monthly Results
Annual
Results
Denudation
rate in mm/
year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
Existing
(2005-2010)
Temperature (inºC)
10.00
12.00
16.00
19.00
31.00
27.00
24.00
23.00
21.00 20.00
14.00
12.00
27.00
0.68
Rainfall (mm)
11.50
68.65
76.27
12.33
76.27 261.78
486.24
566.34
261.47 30.88
12.71
9.34
2000
Stream Discharge
(l/s/km
2
)
3.00
4.85
6.56
0.78
26.90
30.61
42.61
48.08
27.44
4.92
3.27
2.90
16.82
Flood Runoff
(l/s/km
2
)
101.79 147.90 225.89 181.48 568.44 806.44 1005.98 1235.05
818.13 67.36
39.53
25.71
435.31
Bed Load (t/km
2
)
0.00
0.00
1.87
2.49
1.87
18.73
24.95
34.85
24.90
7.48
6.03
0.00
124.50
Suspended Load
(t/km
2
)
0.41
0.12
0.24
0.59
0.24
8.95
11.60
17.55
11.70
3.51
2.93
0.56
58.50
Dissolved Load
(t/km
2
)
0.31
0.10
0.14
0.28
0.14
5.20
7.63
10.35
7.26
2.42
0.35
0.31
34.50
Total Load (t/km
2
)
0.72
0.22
2.24
3.35
2.24
33.45
44.50
66.63
44.40 11.11
8.88
4.44
224.45
Previous
(1985-1990)
Temperature
6.00
8.00
10.00
13.00
24.00
21.00
18.00
16.00
13.00 11.00
8.00
7.00
18.00
0.42
Rainfall
24.32
84.24
99.12
32.75
97.27 328.46
496.85
589.44
283.71 47.66
21.33
15.24
2120
Stream Discharge
(l/s/km
2
)
1.70
2.43
2.32
0.30
18.50
24.76
37.56
41.89
21.56
2.64
2.76
1.59
13.17
Flood Runoff
(l/s/km
2
)
89.48 119.20 195.90 158.45 513.76 762.80
790.34 1076.40
741.54 43.80
21.30
11.12
377.01
Bed Load (t/km
2
)
0.00
0.00
1.10
1.87
1.76
13.76
17.43
21.87
16.67
5.48
4.98
0.00
84.92
Suspended Load
(t/km
2
)
0.30
0.10
0.19
0.38
0.18
6.80
9.65
14.78
9.65
2.67
2.10
0.39
47.19
Dissolved Load
(t/km
2
)
0.28
0.08
0.10
0.21
0.10
3.90
5.80
8.50
5.61
1.86
0.21
0.17
26.82
Total Load (t/km
2
)
0.58
0.18
1.39
2.46
2.04
24.46
32.88
45.15
31.93 10.01
7.29
0.56
158.93
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