Pat Naughtin wrote: >1 mm of rain on a hectare is equivalent to 10�000 litres
In strict SI terms: Would 1 mm on a square kilometre be 1000 cubic metres? I note that the US agricultural industry measures irrigation water in acre-feet. How long would it take an average 1995 Texas resident to consume an acre-foot? http://www.texasep.org/html/wqn/wqn_1trn_sctr.html
