Convert Cubic kilometres per year to Cubic yards per second
Convert Cubic kilometres per year (km³/yr) to Cubic yards per second (yd³/s) instantly and accurately.
Conversion Formula
yd³/s = km³/yr × 41.44645408
About Cubic kilometres per year
The cubic kilometre per year (km³/yr) equals 10⁹/(365.25×86400) ≈ 31.688 m³/s, the unit used in global hydrology, glaciology, and climate science for river basin runoff, ice-sheet mass balance, and groundwater storage change. Total global freshwater river runoff is ≈37 000 km³/yr; the Amazon alone contributes ≈6 600 km³/yr; the Greenland ice sheet loses ≈280 km³/yr to melt and calving. 1 km³/yr ≈ 31.69 m³/s.
About Cubic yards per second
The cubic yard per second (yd³/s) equals 0.764554857984 m³/s, a large unit used in US civil engineering for river flood-stage measurements and reservoir emergency-spillway capacity. A major dam spillway releasing water at 1 000 yd³/s could drain an Olympic pool in about 3 seconds. 1 yd³/s = 0.764554857984 m³/s ≈ 764.555 L/s ≈ 27 ft³/s.
Quick Reference Table
| Cubic kilometres per year (km³/yr) | Cubic yards per second (yd³/s) |
|---|---|
| 1 km³/yr | 41.4465 yd³/s |
| 2 km³/yr | 82.8929 yd³/s |
| 5 km³/yr | 207.232 yd³/s |
| 10 km³/yr | 414.465 yd³/s |
| 25 km³/yr | 1036.16 yd³/s |
| 50 km³/yr | 2072.32 yd³/s |
| 100 km³/yr | 4144.65 yd³/s |