Table 2.4. Discharge measurement notes1.
Vi2∆QI
yoi
VI
∆QI
∆zI
∆AI
Vi∆QI
(m4/sec2)
(m5/sec3)
(m)
(mps)
(m)
(sq m)
(cms)
0.80
1.22
0.00
0.0
0.000
0.000
0.000
0.335
2.44
0.300
0.818
0.245
0.074
0.022
.793
2.44
0.165
1.93
.319
.053
.009
1.37
2.44
.195
3.34
.651
.127
.025
2.59
2.44
.732
6.32
4.626
3.386
2.479
3.35
2.44
.966
8.17
7.892
7.624
7.365
3.54
2.44
1.23
8.64
10.627
13.071
16.078
3.66
2.44
1.24
8.93
11.073
13.731
16.026
3.90
2.44
1.15
9.52
10.948
12.590
14.479
3.84
2.44
1.14
9.37
10.682
12.178
13.882
3.78
2.44
1.15
9.22
10.603
12.194
14.023
3.54
2.44
1.44
8.64
12.442
17.917
25.800
3.47
2.44
1.31
8.47
11.096
12.539
14.169
3.29
2.44
1.49
8.03
11.965
17.828
26.564
3.23
2.44
1.41
7.88
11.111
15.667
22.090
3.32
2.44
1.32
8.10
10.692
14.113
18.630
3.54
2.44
1.19
8.64
10.282
12.236
14.560
3.60
2.44
.945
8.78
8.297
7.841
7.409
2.99
2.44
.921
7.30
6.723
6.192
5.703
1.95
2.13
.515
4.15
2.137
1.101
.567
1.16
1.68
0.0
1.95
0.0
0.0
0.0
0.0
.76
0.0
0.0
0.0
0.0
0.0
TOTAL
49.71
138.20
152.411
180.462
220.88
1
Simons, D.B., E.V. Richardson, M.A. Stevens, J.H. Duke, and V.C. Duke, "Stream flow, groundwater
and ground response data, Hydrology Report, Vol. II, Venezuelan International Meteorological and
Hydrological Experiment, Civil Engineering Dept., Colorado State University, August 1971.
coefficient G of 3.27. If the value of D65 is used for ks, then for yo = 3.90 m (the maximum depth)
y0
3.9
=
≅ 8,700
0.00045
ks
and for yo = .335 m (the smallest non-zero depth)
y0
0.335
=
≅ 750
0.00045
ks
Using a mean yo/ks of approximately 5,000, then from Figure 2.12 the average values for the energy
and momentum coefficients are:
α' = 1.024
and
β' = 1.008
2.70
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