Convert Cubic yards per second to US gallons per day
Convert Cubic yards per second (yd³/s) to US gallons per day (gpd) instantly and accurately.
Conversion Formula
gpd = yd³/s × 17450555.84
About Cubic yards per second
The cubic yard per second (yd³/s) equals 0.764554857984 m³/s, a large unit used in US civil engineering for river flood-stage measurements and reservoir emergency-spillway capacity. A major dam spillway releasing water at 1 000 yd³/s could drain an Olympic pool in about 3 seconds. 1 yd³/s = 0.764554857984 m³/s ≈ 764.555 L/s ≈ 27 ft³/s.
About US gallons per day
The US gallon per day (gpd) equals 3.785411784×10⁻³/86400 ≈ 4.381×10⁻⁸ m³/s, the standard unit in US water-utility regulation and residential water-well pump sizing. The US national average residential water use is about 80-100 gpd per person; a reverse-osmosis membrane module is rated in gpd (50-100 gpd for domestic units). 1 US gpd ≈ 4.381×10⁻⁸ m³/s.
Quick Reference Table
| Cubic yards per second (yd³/s) | US gallons per day (gpd) |
|---|---|
| 1 yd³/s | 17450600 gpd |
| 2 yd³/s | 34901100 gpd |
| 5 yd³/s | 87252800 gpd |
| 10 yd³/s | 174506000 gpd |
| 25 yd³/s | 436264000 gpd |
| 50 yd³/s | 872528000 gpd |
| 100 yd³/s | 1.745 × 109 gpd |