Hydrology's "cardinal rule?"

[Robert Sobczak]

Can you guess which one
is hydrology's cardinal rule?

a. Waste not, want not
b. You break it, you own it
c. A bird in the bush is worth two in the hand
d. What goes around comes around
e. It isn't over 'til it's over

http://www.gohydrology.org/2012/03/hydrologys-cardinal-rule.html