Convert MGD to Cusecs (MGD to ft3/s)
1 million US gallons per day (MGD) = 1.547228652 cusecs (ft³/s). 1 ft³/s = 0.6463168831 MGD. Example: 15 MGD = 15 × 1.547228652 = 23.20842978 ft³/s.
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1 MGD = 1.547228652 ft³/s
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk MGD to cusec converter to paste a column from Excel.
How to Convert MGD to Cusec
- 1 MGD = 1.547228652 ft³/s
- 1 ft³/s = 0.6463168831 MGD
- Example: convert 15 MGD to ft³/s: 15 MGD = 15 × 1.547228652 ft³/s = 23.20842978 ft³/s
Formula
ft³/s = MGD × 1.547228652263
Derivation from SI units:
- 1 MGD = 10⁶ × 3.785411784 L per day ≈ 0.0438 m³/s.
- 1 cusec = 1 ft³/s = 0.028316846592 m³/s.
- 1 MGD = 0.04381263638889 m³/s ÷ 0.028316846592 m³/s per ft³/s = 1.547228652263 ft³/s
Both units are defined exactly, so the factor is exact. MGD definition: million US gallons per day; Cusec definition: cusec.
Worked examples
- A reading of 5 MGD converts to 7.736143261 ft³/s.
5 MGD × 1.547228652 = 7.736143261 ft³/s - A value of 50 MGD is 77.36143261 ft³/s.
50 MGD × 1.547228652 = 77.36143261 ft³/s
MGD to Cusec conversion table
| MGD | Cusecs (ft³/s) |
|---|---|
| 0.5 MGD | 0.7736143261 ft³/s |
| 1 MGD | 1.547228652 ft³/s |
| 2 MGD | 3.094457305 ft³/s |
| 5 MGD | 7.736143261 ft³/s |
| 10 MGD | 15.47228652 ft³/s |
| 20 MGD | 30.94457305 ft³/s |
| 50 MGD | 77.36143261 ft³/s |
| 100 MGD | 154.7228652 ft³/s |
| 500 MGD | 773.6143261 ft³/s |
| 1000 MGD | 1547.228652 ft³/s |
Where it's used
MGD are used for US treatment-plant capacity, while cusecs appear in canal and dam releases in India (e.g. Cauvery releases). Both measure volumetric discharge of rivers, canals and water supply, so the conversion is a fixed factor.
MGD to other water discharge units
| Conversion | 1 MGD equals |
|---|---|
| MGD to cusec | 1.547228652 ft³/s |
| MGD to cumec | 0.04381263639 m³/s |
| MGD to MLD | 3.785411784 MLD |
| MGD to litre per second | 43.81263639 L/s |
| MGD to cubic metre per day | 3785.411784 m³/day |
| MGD to MGD (imp) | 0.8326741846 MGD (imp) |
| MGD to acre-foot per day | 3.068883277 acre-ft/day |
Frequently asked questions
How many cusecs are in 1 million US gallons per day?
1 MGD = 1.547228652 ft³/s.
How do I convert million US gallons per day to cusecs?
Multiply the value in MGD by 1.547228652. For example, 15 MGD × 1.547228652 = 23.20842978 ft³/s.
Is the MGD to ft³/s conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
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, "gallon (U.S.)".
- 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). Convert MGD to Cusecs (MGD to ft3/s). Retrieved October 29, 2026, from https://scientificconverters.com/discharge/mgd-to-cusecs/
IEEE
Scientific Converters, "Convert MGD to Cusecs (MGD to ft3/s)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/discharge/mgd-to-cusecs/