No loss in psi assuming flow
No loss in psi assuming non free flowing.
0.0833
100 feet by 100 feet by one inch equates to 6,233.76 gallons of water.
The volume of water in 1,500 feet of six-inch pipe is: 294.52 cubic feet or 2,203.2 US gallons.
100 feet of 3-inch pipe holds 36.73 gallons of water.
A pipe that is 10 inch would have the velocity of 2.75 feet. This is 2.75 feet with 722 GPM.
A 72-inch pipe 16 feet long holds up to 3,384.1 US gallons of water.
478.75 gallons (rounded) for every inch the water is deep.
3.27 cubic feet.
5.5 gallons per 15 feet of 3-inch pipe.
22.44 gallons for each inch of the water's depth.
12,239.9 gallons of water per 3,000 feet.
You would need 2,451 feet of 2-inch pipe for 400 gallons.