Hi, everyone,can u tell me what's mean the unit AF in water field,such as the cost/AF?

Answer 1

The term AF stands for acre-feet. It is the volume of water 1 foot deep over one acre.

Here is a link that gives the amount of water in gallons and cubic feet.

http://www.western-water.com/Acre-Foot_formula.htm

Answer 2

i have not heard of that, i assume it does not stand for air force, do you like science and math?

Answer 3

that mean acre-feet.

I have seen it in :
www.ecy.wa.gov/programs/
wr/wstf/
images/pdf/costdata.pdf