Cusec (ft³/s)
A cusec is one cubic foot per second. Indian irrigation departments and interstate water agreements still state canal and reservoir releases in cusecs; the US calls it cfs.
Symbol: ft³/s (ASCII: ft3/s)
Quantity: volumetric discharge of rivers, canals and water supply
SI relation: 1 ft³/s = 0.028316846592 m³/s (exact)
Derivation: 1 cusec = 1 ft³/s = 0.028316846592 m³/s.
Exact: yes, by definition
Typical uses
- Canal and dam releases in India (e.g. Cauvery releases)
- USGS stream gauges (cfs)
- Irrigation channel design
Convert cusecs to other units
| Conversion | 1 ft³/s equals | Reverse |
|---|---|---|
| cusec to cumec | 0.02831684659 m³/s | cumec to cusec |
| cusec to MLD | 2.446575546 MLD | MLD to cusec |
| cusec to litre per second | 28.31684659 L/s | litre per second to cusec |
| cusec to cubic metre per day | 2446.575546 m³/day | cubic metre per day to cusec |
| cusec to MGD | 0.6463168831 MGD | MGD to cusec |
| cusec to MGD (imp) | 0.5381713837 MGD (imp) | MGD (imp) to cusec |
| cusec to acre-foot per day | 1.983471074 acre-ft/day | acre-foot per day to cusec |
Open the Discharge Converter (Cumecs, Cusecs, MLD) to convert any value between all units.
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "cubic foot per second".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Cusec (ft³/s). Retrieved October 29, 2026, from https://scientificconverters.com/units/cusec/
IEEE
Scientific Converters, "Cusec (ft³/s)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/units/cusec/