480 barrels
1485
13000 miles6.5 x 2000
26928 pebbles for the minimum depth.
478.75 gallons (rounded) for every inch the water is deep.
It would require 2,937.6 US gallons of water to fill the pipe.
480 barrels
615,142 gallons of water are needed to fill this cylinder.
A standard fire hose is 50 feet long. A hose this length with a 2-inch radius grants about 4.36 cubic feet. This volume holds 32 gallons of water.
4178 US gallons, approx.
100 feet by 100 feet by one inch equates to 6,233.76 gallons of water.
1485
To calculate the roof surface area needed to fill a 30,000-gallon tank with one inch of rainfall, you will need to know the collection efficiency of your roof. A common value is around 90%. With that efficiency, you would need a roof surface area of approximately 6,667 square feet to collect enough water to fill the tank from a one-inch rainfall.
0.15
I think perhaps 2250 blocks .
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.