Convert US gallons per second to Cubic kilometres per year
Convert US gallons per second (gal/s) to Cubic kilometres per year (km³/yr) instantly and accurately.
Conversion Formula
km³/yr = gal/s × 0.0001194585109
About US gallons per second
The US gallon per second (gal/s) equals 3.785411784×10⁻³ m³/s, used for very large pump discharge rates and fire-suppression deluge systems. A large centrifugal fire pump rated 1 500 US gal/min delivers exactly 25 US gal/s; industrial cooling-tower makeup lines are sized in gal/s at peak demand. 1 US gal/s = 3.785411784×10⁻³ m³/s = 60 US gal/min ≈ 227.1 L/min.
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.
Quick Reference Table
| US gallons per second (gal/s) | Cubic kilometres per year (km³/yr) |
|---|---|
| 1 gal/s | 0.000119459 km³/yr |
| 2 gal/s | 0.000238917 km³/yr |
| 5 gal/s | 0.000597293 km³/yr |
| 10 gal/s | 0.00119459 km³/yr |
| 25 gal/s | 0.00298646 km³/yr |
| 50 gal/s | 0.00597293 km³/yr |
| 100 gal/s | 0.0119459 km³/yr |