TABLE V. 
Discharge Over Rectangular Weirs, with and without Contraction. 
Formula, D=3 % (1—.2 H) H> 
For conditions, see page 29. 
Depth, H, of 
Water on crest 
Measured in 
Still Water. 
See Page 24 
In In¬ 
ches 
In 
Feet 
DISCHARGE IN CUBIC FEET PER SECOND 
With Two Complete Contractions. 
1 Foot 
Long 
l l A Feet 
Long 
2 Feet 
Long 
3 Feet 
Long 
5 Feet 
Long 
10 Feet 
Long 
Correction 
to be AD¬ 
DED to each 
of the pre- 
ceeding to 
give dis¬ 
charge with 
no contrac¬ 
tion. 
0.3 
.025 
.0133 
.0200 
.0267 
.0400 
.0677 
.1330 
.0000 
0.6 
.050 
.0369 
.0556 
.0743 
.1116 
.1863 
.3716 
.0004 
0.9 
.075 
.0674 
.1015 
.1350 
.2040 
.3410 
.6830 
.0010 
1.2 
.1 
.1033 
.1560 
.2087 
.3132 
.5240 
1.0519 
.0021 
1.5 
.125 
.1438 
.2175 
.2912 
.4385 
.7332 
1.4695 
.0037 
1.8 
.15 
.1879 
.2847 
.3816 
.5753 
.9627 
1.9312 
.0058 
2.1 
.175 
.2355 
.3575 
.4795 
.7235 
1.2115 
2.4315 
.0085 
2.4 
.2 
.2861 
.4352 
.5843 
.8824 
1.4787 
2.9690 
.0119 
2.7 
.225 
.3399 
.5177 
.6956 
1.0513 
1.7627 
3.5412 
.0160 
3.0 
.25 
.3959 
.6042 
.8126 
1.2293 
2.0227 
4.1462 
.0208 
3.3 
.275 
.4543 
.6946 
.9350 
1.4157 
2.3771 
4.7803 
.0264 
3.6 
.3 
.5149 
.7888 
1.0627 
1.6104 
2.7059 
5.4442 
.0328 
3.9 
.325 
.5775 
.8863 
1.1952 
1.8129 
3.0482 
6.1363 
.0401 
4.2 
.35 
.6420 
.9871 
1.3321 
2.0223 
3.4032 
6.8537 
.0483 
4.5 
.375 
.7079 
1.0909 
1.4732 
2.2335 
3.7691 
7.5976 
.0574 
4.8 
.4 
1.1974 
1.6189 
2.4623 
4.1485 
8.3645 
.0675 
5.1 
.425 
1.3070 
1.7680 
2.6926 
4.5400 
9.1565 
.0785 
5.4 
.45 
1.4189 
1.9221 
2.9280 
4.9404 
9.9775 
.0906 
5.7 
.475 
1.5333 
2.0790 
3.1708 
5.3523 
10.8094 
.1037 
6.0 
.5 
1.6500 
2.2392 
3.4177 
5.7748 
11.6672 
.1178 
6.3 
«o25 
1.7689 
2.4029 
3.6709 
6.2069 
12.5469 
.1331 
6.6 
.55 
1.8890 
2.5698 
3.9295 
6.6489 
13.4474 
.1496 
6.9 
.575 
2.0129 
2.7395 
4.1928 
7.0995 
14.3668 
.1672 
7.2 
.6 
2.1378 
2.9123 
4.4614 
7.5596 
15.3052 
.1859 
7.5 
.625 
2.2646 
3.0881 
4.7351 
8.0291 
16.2641 
.2059 
7.8 
.65 
2.3929 
3.2665 
5.0133 
8.5069 
17.2409 
.2271 
8.1 
.675 
2.5234 
3.3478 
5.2960 
8.9930 
18.2354 
.2495 
8.4 
8.7 
9.0 
9.3 
.7 
.725 
.75 
.775 
3.6313 
3.8170 
4.0052 
4.1961 
5.5836 
5.8747 
6.1702 
6.4704 
9.4832 
9.9906 
10.5007 
11.0190 
19.2497 
20.2796 
21.3262 
22.3895 
9.6 
.8 
9.9 
.825 
10.2 
.85 
10.5 
.875 
4.3888 
4.5833 
4.7806 
4.9792 
6.7734 
7.0810 
7.3929 
7.7075 
11.5444 
12.0769 
12.6169 
13.1641 
23.4704 
24.5659 
25.6779 
26.8056 
10.8 
11.1 
11.4 
11.7 
.9 
.925 
.95 
.975 
8.0257 
8.3509 
8.6731 
9.0012 
13.7177 
14.2839 
14.8461 
15.4192 
27.9477 
29.1164 
30.2786 
31.4652 
2733 
29^4 
3248 
3524 
3816 
4121 
4440 
4775 
5123 
5486 
5864 
6258 
12.0 
1.0 
12.3 
1.025 
12.6 
1.05 
12.9 
1.075 
9.3333 
9.6685 
10.0058 
10.3471 
16.0000 
16.5869 
17.1789 
17.7777 
13.2 
1.1 
13.5 
1.125 
13.8 
1.150 
14.1 
1.175 
10.6907 
11.0376 
11.3866 
11.7388 
18.3825 
18.9926 
19.6080 
20.2298 
14.4 
14.7 
15.0 
15.3 
1.2 
1.225 
1.25 
1.275 
12.0935 
12.4507 
12.8109 
13.1733 
20.8569 
21.4893 
22.1279 
22.7713 
15.6 
15.9 
16.2 
16.5 
16.8 
17.1 
17.4 
17.7 
1.3 
1.325 
1.35 
1.375 
13.5375 
13.9067 
14.2740 
14.6450 
23.4189 
24.0727 
24.7308 
25.3946 
1.4 
1.425 
1.45 
1.475 
26.0625 
26.7355 
27.4127 
28.0950 
32.6667 
33.8829 
35.1109 
36.3552 
.6667 
.7091 
.7531 
.7988 
37.6100 
38.8801 
40.1625 
41.4573 
.8490 
.8949 
.9455 
.9977 
42.7664 
44.0866 
45.4204 
46.7653 
1.0516 
1.1073 
1.1646 
1.2237 
48.1224 
49.4927 
50.8733 
52.2671 
1.2846 
1.3473 
1.4117 
1.4780 
53.6710 
55.0870 
56.5132 
57.9515 
1.5460 
1.6160 
1.6878 
1.7615 
