Frictional Resistance in Artificial Waterways 31 
TABLE 8—HYDRAULIC ELEMENTS OE EARTH CHANNELS. 
Name of 
Channel 
Rio Grande System— 
P 
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m 
%_j • 
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h 
d 
A 
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n 
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>> 
w « 
4-> 
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0 
G £. 
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r-, 4) 
W P. 
o 
p 
<u 
S-l 
<u 
o 
o 
p 
a> 
►1—1 
o 
<D 
O 
O 
Main Canal . 
2000 
707.00 
1146.05 
4.84 
65.7 
2.225 
.00307 
58.4 
.0284 
Main Canal . 
2000 
85.13 
| 45.81 
1.86 
54.3 
0.844 
.00299 
37.0 
.0342 
Main Canal . 
2000 
75.07 
| 39.06 
1.92 
52.1 
0.749 
.00300 
40.4 
.0309 
Lateral No. 1 . 
5280 
380.00 
81.62 
4.66 
43.7 
1.868 
.00366 
56.3 
.0284 
Lateral No. 1 . 
5280 
33.34 
| 22.71 
1.47 
34.5 
0.659 
.00368 
29.8 
.0386 
Lateral No 1 . 
5280 
27.16 
' 19.52 
1.39 
32.8 
0.596 
.00362 
29.9 
.0221 
Lateral No. lc . 
1238 
143.60 
37.22 
3.86 
26.2 
1 422 
00220 
68 8 
0221 
Lateral No. lc .. 
1238 
22.60 
12.70 
1.78 
19.6 
0.648 
.00204 
48.9 
.0249 
Bessemer Canal a . 
1495 
57.98 
37.15 
1.56 
18.15 
2.045 
.00036 
57.5 
.0281 
Bessemer Canal b . 
1600 
57.98 
37.27 
1.55 
19.87 
1.877 
.00024 
72.9 
.0219 
Bessemer Canal c . 
1194 
42.35 
36.65 
1.16 
17.78 
2.063 
.00026 
50.0 
.0321 
Bessemer Canal d . 
2002 
42.35 
33.56 
1.26 
18.55 
1.808 
.00028 
55.9 
.0280 
Rocky Ford Canal a . 
1000 
41.20 
24.44 
1.68 
16.08 
1.521 
.00058 
56.5 
.0266 
Rocky Ford Canal b . 
1350 
34.33 
19.79 
1.73 
13.98 
1.415 
.00069 
55.3 
.0269 
Fort Lyons Canal . 
2600 
140.55 
75.60 
1.86 
66.80 
1.132 
.00038 
89.5 
.0165 
Jarbeau Power . 
900 
32.27 
16.43 
1.96 
14.75 
1.114 
.00049 
83.8 
.0176 
Mesa Lateral a . 
550 I 
42.16 
27.91 
1.51 
16.52 
1.689 
.00022 
78.3 [ 
.0200 
Mesa Lateral b . 
600 
40.32 
27.40 
1.47 
16.46 
1.663 
.00026 
70.6 
.0220 
Willcox Canal . 
4001 
15.29 
8.78 
1.74 
26.30! 
0.334 
.00334! 
52.11 
.0205 
GENERAL SUMMARY OF (n). 
Semi-Circular 3Ietallic Flumes. 
Smooth, unobstructed water face; with wasteways, and of length less 
than 100 feet . 
Smooth, unobstructed water face. 
Joint connections protruding into the waterway beyond the plane of 
the sheet metal . 
Corrugations at right angles to the line of flow. 
(n) 
0.021 
0.011 
0.0174 
0.0225 
Timber Flumes. 
Lined with patent roofing material. 
Planed lumber, battens on the sides; flooring placed transversely. 
Planed lumber; battens on the sides; flooring placed longitudinally.... 
Planed lumber; no battens; perfect alignment. 
0.016 
0.015 
0.012 
0.011 
Concrete-lined Channels. 
Smooth concrete or mortar-finished surface. 0.012 
With surface left unplastered in condition given it by the forms. 0.016 
