Convert MGD to Acre-feet per Day (MGD to acre-ft/day)
1 million US gallons per day (MGD) = 3.068883277 acre-feet per day (acre-ft/day). 1 acre-ft/day = 0.3258514286 MGD. Example: 15 MGD = 15 × 3.068883277 = 46.03324916 acre-ft/day.
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1 MGD = 3.068883277 acre-ft/day
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk MGD to acre-foot per day converter to paste a column from Excel.
How to Convert MGD to Acre-foot per Day
- 1 MGD = 3.068883277 acre-ft/day
- 1 acre-ft/day = 0.3258514286 MGD
- Example: convert 15 MGD to acre-ft/day: 15 MGD = 15 × 3.068883277 acre-ft/day = 46.03324916 acre-ft/day
Formula
acre-ft/day = MGD × 3.068883277217
Derivation from SI units:
- 1 MGD = 10⁶ × 3.785411784 L per day ≈ 0.0438 m³/s.
- 1 acre-ft/day = 1233.48 m³ ÷ 86,400 s; 1 cusec for one day ≈ 1.98 acre-feet.
- 1 MGD = 0.04381263638889 m³/s ÷ 0.0142764101568 m³/s per acre-ft/day = 3.068883277217 acre-ft/day
Both units are defined exactly, so the factor is exact. MGD definition: million US gallons per day; Acre-foot per Day definition: acre-foot per day.
Worked examples
- A reading of 5 MGD converts to 15.34441639 acre-ft/day.
5 MGD × 3.068883277 = 15.34441639 acre-ft/day - A value of 50 MGD is 153.4441639 acre-ft/day.
50 MGD × 3.068883277 = 153.4441639 acre-ft/day
MGD to Acre-foot per Day conversion table
| MGD | Acre-feet per Day (acre-ft/day) |
|---|---|
| 0.5 MGD | 1.534441639 acre-ft/day |
| 1 MGD | 3.068883277 acre-ft/day |
| 2 MGD | 6.137766554 acre-ft/day |
| 5 MGD | 15.34441639 acre-ft/day |
| 10 MGD | 30.68883277 acre-ft/day |
| 20 MGD | 61.37766554 acre-ft/day |
| 50 MGD | 153.4441639 acre-ft/day |
| 100 MGD | 306.8883277 acre-ft/day |
| 500 MGD | 1534.441639 acre-ft/day |
| 1000 MGD | 3068.883277 acre-ft/day |
Where it's used
MGD are used for US treatment-plant capacity, while acre-feet per day appear in US irrigation district deliveries. 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 acre-foot per day | 3.068883277 acre-ft/day |
| MGD to cumec | 0.04381263639 m³/s |
| MGD to cusec | 1.547228652 ft³/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) |
Frequently asked questions
How many acre-feet per day are in 1 million US gallons per day?
1 MGD = 3.068883277 acre-ft/day.
How do I convert million US gallons per day to acre-feet per day?
Multiply the value in MGD by 3.068883277. For example, 15 MGD × 3.068883277 = 46.03324916 acre-ft/day.
Is the MGD to acre-ft/day 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, "acre-foot".
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 Acre-feet per Day (MGD to acre-ft/day). Retrieved October 29, 2026, from https://scientificconverters.com/discharge/mgd-to-acre-feet-per-day/
IEEE
Scientific Converters, "Convert MGD to Acre-feet per Day (MGD to acre-ft/day)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/discharge/mgd-to-acre-feet-per-day/