About 5869.24 gallons
The liquid volume in a 6-inch pipe 1200 meters long is: 5,782.7 US gallons.
22.9 Imperial gallons, approx.
1200
615,142 gallons of water are needed to fill this cylinder.
16 and 7/8
It would require 2,937.6 US gallons of water to fill the pipe.
Exactly 5264.1669 gallons
You will need a maximum of 11,230 gallons of water.
Approx 642665 US gallons.
7,646 gallons.
4178 US gallons, approx.
If the bottom is flat and level, then it takes 239.38 gallons for each inch of the water's depth.