It supplied 960,000 imperial gallons (4,400 m3) of water per day.
So the gas bill, for 58 imperial gallons, comes to about $193.
Even during the great drought of 1934 the lowest daily return was 9.1 million imperial gallons (41,000 m3).
Water was flowing through the tunnel at the rate of 140 million imperial gallons (636,000 m3) per day by 1970.
Also called Clark degree (in terms of an imperial gallon).
The imperial gallon is bigger than each of these.
The original 1909 rate was 3 d per imperial gallon.
However, a common minimum given appears to be 10 imperial gallons per gerbil.
Today the treatment plant can supply almost 10 million imperial gallons of drinking water per day.
The actual fuel capacity was estimated at 700,000 imperial gallons.
