Geoscience Reference
In-Depth Information
Table 9.13 List of runoff coef
cients for different surfaces
Surface identi
er (ss)
Character of surface
Runoff coef
cient
Pavement
0
Asphaltic and concrete
0.70
−
0.95
1
Brick
0.70
−
0.85
2
Roofs
0.75
−
0.95
Lawns, sandy soil
3
Flat, 2 %
0.95
−
0.10
Average, 2
−
7 %
0.10
−
0.15
4
5
Steep, 7 %
0.15
−
0.20
Lawns, heavy soil
6
Flat, 2 %
0.13
−
0.17
7
Average, 2
−
7 %
0.18
−
0.22
8
Steep, 7 %
0.25
−
0.35
9
Bare soil without vegetation
0.55
−
0.60
10
Soil covered by grass
0.36
−
0.45
11
Soil overgrown with shrubs
0.39
−
0.42
12
Forest plot (high trees)
0.28-0.37
13
Soil plot with many-storied houses
0.88
−
0.93
14
Soil plot with low-storied houses
0.79
−
0.86
15
Village territory
0.60
−
0.64
16
River
0
17
Reservoir
0
Table 9.14 Comparison of the assessments of physical-chemical characteristics of Sai Gon River
delivered by the Adaptive Identi
er with the laboratory analyses
Δ
x
(km)
Sai Gon River, physical-chemical characteristics
Turbidity (NTU)
Suspended matters (mg/l)
Mineral oil (
ʼ
g/l)
AI
L
Error (%)
AI
L
Error (%)
AI
L
Error (%)
0
68
66
3.0
51.5
50.2
2.6
0.42
0.38
5.3
1
73
69
5.8
49.7
52.9
7.0
0.51
0.44
5.9
5
87
84
3.6
70.3
65.7
7.0
0.55
0.48
4.6
10
89
92
3.3
88.6
90.4
2.0
0.72
0.65
7.6
15
87
91
4.4
81.3
77.7
4.6
0.61
0.55
0.9
The education of the Adaptive Identi
er was realized 19 December, 2013 during 10
15 h of local
time. The testing measurements were carried out on 20 and 21 December, 2013 during 10
−
15 h of
local time. Final results of testing measurements are average values of the physical-chemical
characteristics received during two days. Notation AI is the results delivered by the Adaptive
Identi
er, L is the data of laboratory analysis of water quality,
ʔ
x is the distance along the river
from Ho Chi Minh City center
−
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