Convert Cubic kilometres per year to Acre-feet per hour
Convert Cubic kilometres per year (km³/yr) to Acre-feet per hour (ac-ft/h) instantly and accurately.
Conversion Formula
ac-ft/h = km³/yr × 92.48382316
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 Acre-feet per hour
The acre-foot per hour (ac-ft/h) equals 1233.48183754752/3600 ≈ 0.34263 m³/s, standard for sizing irrigation district delivery canals, reservoir outflow scheduling, and aquifer recharge basin calculations in the western US. The US Bureau of Reclamation uses ac-ft/h for canal operational planning; a 1 000-acre farm irrigating with 0.5 in/h rain-equivalent receives ≈41 ac-ft/h. 1 ac-ft/h ≈ 0.34263 m³/s.
Quick Reference Table
| Cubic kilometres per year (km³/yr) | Acre-feet per hour (ac-ft/h) |
|---|---|
| 1 km³/yr | 92.4838 ac-ft/h |
| 2 km³/yr | 184.968 ac-ft/h |
| 5 km³/yr | 462.419 ac-ft/h |
| 10 km³/yr | 924.838 ac-ft/h |
| 25 km³/yr | 2312.1 ac-ft/h |
| 50 km³/yr | 4624.19 ac-ft/h |
| 100 km³/yr | 9248.38 ac-ft/h |