Rule of thumb is a half pound per foot NOT taking in the density of the water, cold water adds more resistance due to the weight.
In this case use the constant . 434 times the height 43.4
To prove take 43.4 PSI times 2.31 = 100.25 ft TA DUM isn’t pluminn fun
This of course does not take friction looses into account like piping walls fittings and other great stuff like the actual required pressure needed at the source