Convert US gallons per day to Cubic yards per second
Convert US gallons per day (gpd) to Cubic yards per second (yd³/s) instantly and accurately.
Conversion Formula
yd³/s = gpd × 5.730476490e-8
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.
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.
Quick Reference Table
| US gallons per day (gpd) | Cubic yards per second (yd³/s) |
|---|---|
| 1 gpd | 5.73 × 10-8 yd³/s |
| 2 gpd | 1.146 × 10-7 yd³/s |
| 5 gpd | 2.865 × 10-7 yd³/s |
| 10 gpd | 5.73 × 10-7 yd³/s |
| 25 gpd | 1.433 × 10-6 yd³/s |
| 50 gpd | 2.865 × 10-6 yd³/s |
| 100 gpd | 5.73 × 10-6 yd³/s |