Frictional Resistance in Artificial Waterways 
45 
Fig. 33. Timber Flume, Redlands Power Canal, Grand Junction. 
TABLE 14 
CURRENT METER MEASUREMENTS IN TIMBER FLUME, REDLANDS 
POWER CANAL, GRAND JUNCTION. 
Station 
Depth Ft. 
Discharge Sec. 
Ft. 
Relative Percentages 
Mult. Pt. 
Integration 
0.2 & 0.8 
CD 
O 
Mult. Pt. 
Integration 
l 
0.2 & 0.8 
CD 
O 
1 
5.68 
24.08 
23.74 
24.76 
27.26 
100.0 
98.6 
102.6 
j 113.5 
3 
5.68 
27.38 
27.49 
27.38 
30.67 
100.0 
100.5 
100.0 
112.1 
5 
| 5.68 
| 30.22 
31.24 
31.58 
31.58 
100.0 
103.3 
104.2 
| 104.1 
7* 
I 5.68 
| 30.79 
31.58 
32.15 
32.38 
100.0 
102.5 
104.3 
| 105.1 
9 
| 5.68 
| 30.90 
30.67 
33.40 
33.40 
100.0 
99.4 
108.1 
j 108.1 
11 
| 5.68 
I 30.90 
30.56 
32.83 
33.06 
100.0 
98.9 
106.2 
| 107.1 
13 
| 5.68 
| 30.67 
31.13 
32.72 
33.28 
100.0 
101.5 
106.7 
| 108.5 
15 
| 5.68 
| 32.60 
31.81 
34.31 
32.94 
100.0 
97.6 
105.1 
| 101.0 
17 
| 5.68 
33.85 
32.94 
35.90 
36.47 
100.0 
97.3 
106.0 
107.8 
19 
| 5.68 
33.40 
34.76 
35.33 
36.69 
100.0 
103.9 
105.8 
| 109.9 
21 
| 5.68 
| 31.47 
32.04 
33.40 
35.33 
100.0 
101.8 
106.2 
| 112.1 
23 
| 5.68 
| 29.54 
29.20 
29.51 
33.97 
100.0 
98.9 
100.0 
| 115.0 
25 
| 5.68 
30.44 
32.94 
30.67 
31.92 
100.0 
108.1 
100.1 
| 104.7 
Totals . .. 
| 396.24 
400.10 
413.94 
429.05 
100.0 
100.97 | 
104.47 
108.28 
COMPARISON OF CURRENT METER METHODS 
In the following discussion it will be assumed that the multiple 
point method of determining the flow in open channels is the most 
accurate, because it calls for the greatest number of velocity de¬ 
termination in each vertical section. It must be admitted, how¬ 
ever, that it is not always the most practical. In Tables 11, 12, 13 
