Convert Acre-feet per hour to Acre-feet per second
Convert Acre-feet per hour (ac-ft/h) to Acre-feet per second (ac-ft/s) instantly and accurately.
Conversion Formula
ac-ft/s = ac-ft/h × 0.0002777777778
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.
About Acre-feet per second
The acre-foot per second (ac-ft/s) equals 1233.48183754752 m³/s, an enormous unit representing the flow that would fill a football-field-sized area to 1 ft depth every second. It appears in descriptions of exceptionally large dam-break flood waves and major river-system extreme events. The 1976 Teton Dam collapse peak outflow was estimated at ≈65 000 ft³/s ≈ 1.49 ac-ft/s. 1 ac-ft/s = 1 233.48 m³/s.
Quick Reference Table
| Acre-feet per hour (ac-ft/h) | Acre-feet per second (ac-ft/s) |
|---|---|
| 1 ac-ft/h | 0.000277778 ac-ft/s |
| 2 ac-ft/h | 0.000555556 ac-ft/s |
| 5 ac-ft/h | 0.00138889 ac-ft/s |
| 10 ac-ft/h | 0.00277778 ac-ft/s |
| 25 ac-ft/h | 0.00694444 ac-ft/s |
| 50 ac-ft/h | 0.0138889 ac-ft/s |
| 100 ac-ft/h | 0.0277778 ac-ft/s |