Simple method for calculating water force from flow speed?

[zeroonezero]

To calculate the force of wind I use the following simple method: Speed in mph^2 x .0027 = psf. Anyone know of a simple method of calculating psf using the speed of water? Please.

 

[Geezer]

To calculate the force of wind I use the following simple method: Speed in mph^2 x .0027 = psf. Anyone know of a simple method of calculating psf using the speed of water? Please.

What is "psf"? Pounds per square foot? And what units does 0.0027 have?

Re: Your water question...

How much water? At what speed? Turbulent or laminar flow? What is the surface area you're considering?