MEASUREMENT AND DIVISION OF WATER. 
35 
DISCHARGE OVER RECTANGULAR WEIRS OF VARIOUS 
LENGTHS AND WITH VARIOUS DEPTHS OF WATER, 
WITH COMPLETE CONTRACTION. 
3 
Formula, D — 3J (1 — ,2H) 2 . 
DISCHARGE IN CUBIC FEET PER SECOND. 
Depth of Water 
on Crest. 
With two Complete Contractions. 
Correction to 
be added to 
each of the 
prec e d i n g 
t'o give dis- 
In 
Inches. 
In 
Feet. 
1 ft. 
Long. 
IX ft. 
Long. 
2 ft. 
Long. 
3 ft. 
Long. 
5 ft. 
Long. 
1 10 ft. 
Long. 
charge with 
no contrac¬ 
tion. 
0.3 
.025 
.0133 
.0200 
.0267 
.0400 
.0677 
.133 
.0000 
0.6 
.050 
.0369 
.0556 
.0743 
.1116 
.1863 
.3726 
.C001 
0.0 
.075 
.0674 
.1015 
.1350 
.2040 
.3410 
.6830 
.0010 
1.2 
.1 
.1033 
.1550 
.2078 
.3132 
.5240 
1.0519 
.0021 
1.5 
.125 
.1438 
.2175 
.2912 
.4385 
.7332 
1.4695 
.0037 
1.8 
.15 
.1879 
.2817 
.3816 
.5743 
.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 
. S959 
.6042 
.9126 
1.2293 
2.0227 
4.1462 
.0208 
3.3 
.275 
.4543 
.6946 
.9350 
1.4157 
2.3771 
4.7803 
.0264 
3.6 
.3 
.5149 
.7287 
1.0725 
1.6103 
2.7057 
5.4441 
.0328 
3.9 
.325 
.5775 
.8863 
1.1952 
1.8129 
3.0483 
6-1363 
.0401 
4.2 
.35 
.6420 
.9871 
1.3423 
2.0226 
3.4032 
6.8547 
.0483 
4.5 
.375 
.7079 
1.0905 
1.4732 
2.2385 
3.7691 
7.5956 
.0574 
4.8 
.4 
1.1974 
1.6160 
2.4623 
4.1489 
8.3655 
.0674 
5.1 
.425 
1.3070 
1.7689 
2.6926 
4.54C0 
9.1585 
.0785 
5.4 
.45 
1.4189 
1.9221 
2.9874 
4.9410 
9.9725 
.0905 
5.7 
.475 
1.5333 
2.0790 
3.1703 
5.3529 
10.8094 
.1036 
6.0 
.5 
1.6500 
2.2392 
3.4177 
5.7748 
11.6672 
.1178 
6.3 
.525 
1.7689 
2.4029 
3.6709 
6.2069 
12.5469 
.1331 
6.6 
.55 
1.8899 
2.5698 
3.9295 
6.6489 
13.4474 
.1496 
6.9 
.575 
2.0129 
2.7395 
4.1928 
7.0995 
14.3658 
.1671 
7.2 
.6 
2.1381 
2.9128 
4.4621 
7.5607 
15.3072 
.1859 
7.5 
.625 
2.2646 
3.0881 
4.7351 
8.0291 
16.2641 
.2059 
7.8 
.65 
2.3929 
3.2663 
5.0130 
8.5064 
17.2399 
.2271 
8.1 
.675 
.... 
2.5234 
3.3478 
5.2965 
8.9939 
18.2374 
.2496 
