FLOOD03637

• County: Statewide
• Basin: Statewide
• Title: Incipient Motion and Sediment Transport
• Date: 10/1/1973
• Prepared By: Journal of the Hydraulics Division
• Floodplain - Doc Type: Educational/Technical/Reference Information

r

1690

OCTOBER 1973

HYI0
TABLE 2.-Primary Data

Average
velocity
Particle Channel Water depth, Temperature, V, in Water surface
size. d, width, W, 0, T, in degrees feet per slope
in millimeters in feet in feet celsius second S x 103
(1) (2) (3) (4) 151 (61

(a) Gilbert's

0.305 1.32 0.058-0.205 . 1.44-3.09 2.7-15.5
0.305 1.96 0.067-0.283 1.03-3.46 1.8-17.7
0.375 0.66 0.037-0.367 1.58-3.81 2.1-27.9
0.375 1.00 0.060-0.497 1.06-3.60 1.5-26.3
0.375 1.32 0.037-0.289 1.07-3.82 2.5-24.6
0.375 1.96 0.044-0.411 1.14-4.21 1.8-16.2
0.506 0.44 0.100-0.235 1.31-3.00 6.1-21.6
0.506 0.66 0.050-0.242 1.14-4.45 2.0-25.2
0.506 1.00 0.051-0.581 1.13-4.01 1.9-22.4
0.506 1.32 0.040-0.409 1.36-4.75 1.6-23.4
0.506 1.96 0.060-0.222 1.44-3.92 3.5-20.3
0.786 0.66 0.056-0.460 1.66-4.67 1.9-24.7
0.786 1.00 0.062-0.491 1.24-4.53 1.8-:7.5
0.786 1.32 0.087-0.360 1.54-3.66 3.0-19.1
1.710 0.66 0.114-0.562 2.21-3.02 5.6-15.6
1.710 1.00 0.081-0.447 1.50-3.93 1.8-22.9

INCIPIENT MOTION

and Parameters

Total sediment
concentration, Standard Correlation Number Standard
Ct. in parts error, coefficient, of data, error
per million I J IT r N from Eq. 26
(7) (8) (9) (10) (11) (12) (131

Data (1914)

866-19.666 4.978 1.215 0.086 0.968 21 0.088
400-27.552 4.982 1.226 0.083 0.981 33 0.086
376-35.340 4.926 1.218 0.090 0.978 50 0.120
126-35.340 4.991 1.234 0.093 0.989 42 0.097
506-29,515 4.804 1.068 0.092 0.975 51 0.138
202-24,241 4.907 1.143 0.120 0.966 44 0.136
1,216-18.829 5.118 1.164 0.110 0.955 15 0.175
182-23.852 4.940 1.093 0.124 0.945 63 0.127
77-24.855 5.041 1.136 0.104 0.976 61 0.131
226-27.379 5.084 1.155 0.082 0.984 46 0.131
925-22,100 5.065 1.134 0.070 0.980 49 0.124
447-26,020 5.188 1.107 0.139 0.957 36 0.230
195-29,515 5.160 1.067 0.100 0.984 53 0.232
723-24,047 5.201 1.107 0.109 0.968 26 0.223
1.389- 6.018 5.066 0.945 0.175 0.492 12 0.204
82-16,356 5.188 0.976 0.202 0.946 28 0.265

(b) Nomicos' Dala (1956)
0.152 0.875 0.241 25.0-26.0 0.80-2.66 2,0-3.9 300- 5.600 I 5.151 ~ 0.174 0.900 12 0.244
(el Vanoni and Brooks' Data (1957)
.Ii, I ~ lUll
i 0.137 2.79 0.203-0.553 18.9-27.4 0.77-2.53 0.7-2.8 37- 3.000 5.725 0.233 0.930 14
(d) Kennedy's Data (1961)
0.233 0.875 0.147-0.346 24.5-30.1 1.57-3.42 2.6-16.0 730-34.700 4.983 1.356 0.122 0.968 14 0.155
0.549 0.875 0.074-0.346 24.3-27.0 1.65-4.27 5.5-27.2 1,680-35,900 4.911 1.068 0.087 0.978 14 0.089
0.233 2.79 0.145-0.356 23.0-27.3 1.35-3.45 1.7-22.9 490-58.500 5.085 1.452 0.166 0.966 13 0.197
(e) Stein's Dala (1%5)
0.4 4.0 0.59-1.20 20.0-29.0 1.38-5.51 I 0.61-10.79 93-24.260 I 5.085 ~ 0.055 0.992 42 0.089
(f) Guy, Simons. and Richardson's Data (1966)

"

0.19 8.0 0.49-1.09 12.3-19.7 1.04-4.74 0.43-9.50
0.27 8.0 0.45-1.13 10.2-18,5 1.24-4.93 0.46-10.22
0.28 8.0 0.30-1.07 10.2-17.6 1.04-4.93 0.45-10.07
0.48(0.45) 8.0 0.19-1.00 9.0-20.0 0.75-6.18 0.39-10.10
0.50(0.47) 8.0 0.30-1.33 10.7-23.5 1.43-5.32 0.42-9.60
1.20(0.93) 8.0 0.38-1.11 16.7-21.7 1.30-6.07 0.37-12.80
0.32 2.0 0.54-0.74 7.0-34.3 1.24-5.73 0.86-16.20
0.33
(Uniform) 2.0 0.49-0.52 19.8-20.3 1.17-5.93 0.88-11.40
0.33
(Graded) 2.0 0.48-0.53 19.6-24.1 1.06-6.34 0.47-9.80
0.59(0.54) 2.0 0.59-0.89 16.9-25.1 1.43-5.32 0.42-9.60

29-47,300 5.264 1.578 0.191 0.979 29 0.203
12-35,800 5.219 1.517 0.170 0.984 18 0.209
12-42,400 5.265 1.516 0.167 0.982 33 0.190
10-15.100 4.951 1.137 0.199 0.977 34 0.235
23-17,700 4.978 1.171 0.163 0.976 50 0.144
15-10.200 4.999 1.056 0.134 0.988 32 0.131
55-49.300 4.973 1.325 0.187 0.976 29 0.195
47-18.400 4.790 1.225 0.125 0.989 12 0.197
12-22.500 4.985 1.1% 0,260 0.962 14 0.249
17-50.000 4.890 1.131 0.155 0.972 35 0.171

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