A cubic foot per second (cfs) is a unit of flow rate that describes the volume of water or other fluids moving past a point every second. It is commonly used in hydrology to measure rivers and streams, providing insight into water availability and flood prediction. To put it in perspective, one cubic foot per second is equivalent to 7.48 gallons per second. Thus, a modest stream might flow at several tens of cfs, while larger rivers, such as the Mississippi, can exceed 500,000 cfs!
Interestingly, this unit has historical significance dating back to the early days of water management, where it played a crucial role in the development of infrastructure for agriculture and urban planning, influencing patterns of settlement and economic development around the world.
The unit “cubic yard per second” is a measure of volumetric flow rate, often used in engineering and hydrology to quantify the rate at which a volume of liquid, such as water, flows in a system. One cubic yard per second translates to an immense 764.555 liters per second, highlighting its utility in large-scale applications like river flow measurements or irrigation systems. To put it in perspective, this rate could fill an Olympic-sized swimming pool in roughly two hours!
In the 19th century, as industrial and municipal water demands increased, the mining sector and large-scale waterworks projects became some of the earliest adopters of the cubic yard per second. It’s a testament to how critical this unit has been in shaping water management practices around the world, ensuring efficient usage and distribution of this vital resource.
Cubic feet per second | Cubic yards per second |
---|---|
0
ft³/s
|
0
yd³/s
|
1
ft³/s
|
0.037037
yd³/s
|
2
ft³/s
|
0.074074
yd³/s
|
3
ft³/s
|
0.111111
yd³/s
|
4
ft³/s
|
0.148148
yd³/s
|
5
ft³/s
|
0.185185
yd³/s
|
6
ft³/s
|
0.222222
yd³/s
|
7
ft³/s
|
0.259259
yd³/s
|
8
ft³/s
|
0.296296
yd³/s
|
9
ft³/s
|
0.333333
yd³/s
|
10
ft³/s
|
0.37037
yd³/s
|
11
ft³/s
|
0.407407
yd³/s
|
12
ft³/s
|
0.444444
yd³/s
|
13
ft³/s
|
0.481481
yd³/s
|
14
ft³/s
|
0.518518
yd³/s
|
15
ft³/s
|
0.555555
yd³/s
|
16
ft³/s
|
0.592592
yd³/s
|
17
ft³/s
|
0.629629
yd³/s
|
18
ft³/s
|
0.666666
yd³/s
|
19
ft³/s
|
0.703703
yd³/s
|
20
ft³/s
|
0.74074
yd³/s
|
21
ft³/s
|
0.777777
yd³/s
|
22
ft³/s
|
0.814814
yd³/s
|
23
ft³/s
|
0.851851
yd³/s
|
24
ft³/s
|
0.888888
yd³/s
|
25
ft³/s
|
0.925925
yd³/s
|
26
ft³/s
|
0.962962
yd³/s
|
27
ft³/s
|
0.999999
yd³/s
|
28
ft³/s
|
1.03704
yd³/s
|
29
ft³/s
|
1.07407
yd³/s
|
30
ft³/s
|
1.11111
yd³/s
|
31
ft³/s
|
1.14815
yd³/s
|
32
ft³/s
|
1.18518
yd³/s
|
33
ft³/s
|
1.22222
yd³/s
|
34
ft³/s
|
1.25926
yd³/s
|
35
ft³/s
|
1.29629
yd³/s
|
36
ft³/s
|
1.33333
yd³/s
|
37
ft³/s
|
1.37037
yd³/s
|
38
ft³/s
|
1.40741
yd³/s
|
39
ft³/s
|
1.44444
yd³/s
|
40
ft³/s
|
1.48148
yd³/s
|
41
ft³/s
|
1.51852
yd³/s
|
42
ft³/s
|
1.55555
yd³/s
|
43
ft³/s
|
1.59259
yd³/s
|
44
ft³/s
|
1.62963
yd³/s
|
45
ft³/s
|
1.66666
yd³/s
|
46
ft³/s
|
1.7037
yd³/s
|
47
ft³/s
|
1.74074
yd³/s
|
48
ft³/s
|
1.77778
yd³/s
|
49
ft³/s
|
1.81481
yd³/s
|
50
ft³/s
|
1.85185
yd³/s
|
51
ft³/s
|
1.88889
yd³/s
|
52
ft³/s
|
1.92592
yd³/s
|
53
ft³/s
|
1.96296
yd³/s
|
54
ft³/s
|
2
yd³/s
|
55
ft³/s
|
2.03703
yd³/s
|
56
ft³/s
|
2.07407
yd³/s
|
57
ft³/s
|
2.11111
yd³/s
|
58
ft³/s
|
2.14814
yd³/s
|
59
ft³/s
|
2.18518
yd³/s
|
60
ft³/s
|
2.22222
yd³/s
|
61
ft³/s
|
2.25926
yd³/s
|
62
ft³/s
|
2.29629
yd³/s
|
63
ft³/s
|
2.33333
yd³/s
|
64
ft³/s
|
2.37037
yd³/s
|
65
ft³/s
|
2.4074
yd³/s
|
66
ft³/s
|
2.44444
yd³/s
|
67
ft³/s
|
2.48148
yd³/s
|
68
ft³/s
|
2.51851
yd³/s
|
69
ft³/s
|
2.55555
yd³/s
|
70
ft³/s
|
2.59259
yd³/s
|
71
ft³/s
|
2.62963
yd³/s
|
72
ft³/s
|
2.66666
yd³/s
|
73
ft³/s
|
2.7037
yd³/s
|
74
ft³/s
|
2.74074
yd³/s
|
75
ft³/s
|
2.77777
yd³/s
|
76
ft³/s
|
2.81481
yd³/s
|
77
ft³/s
|
2.85185
yd³/s
|
78
ft³/s
|
2.88888
yd³/s
|
79
ft³/s
|
2.92592
yd³/s
|
80
ft³/s
|
2.96296
yd³/s
|
81
ft³/s
|
3
yd³/s
|
82
ft³/s
|
3.03703
yd³/s
|
83
ft³/s
|
3.07407
yd³/s
|
84
ft³/s
|
3.11111
yd³/s
|
85
ft³/s
|
3.14814
yd³/s
|
86
ft³/s
|
3.18518
yd³/s
|
87
ft³/s
|
3.22222
yd³/s
|
88
ft³/s
|
3.25925
yd³/s
|
89
ft³/s
|
3.29629
yd³/s
|
90
ft³/s
|
3.33333
yd³/s
|
91
ft³/s
|
3.37037
yd³/s
|
92
ft³/s
|
3.4074
yd³/s
|
93
ft³/s
|
3.44444
yd³/s
|
94
ft³/s
|
3.48148
yd³/s
|
95
ft³/s
|
3.51851
yd³/s
|
96
ft³/s
|
3.55555
yd³/s
|
97
ft³/s
|
3.59259
yd³/s
|
98
ft³/s
|
3.62962
yd³/s
|
99
ft³/s
|
3.66666
yd³/s
|
100
ft³/s
|
3.7037
yd³/s
|
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