A better interpretation is there is a 1% chance of flooding in any given year. I suspect the term "100 year flood plain" came about because it is easier to say.
Quote:
Originally Posted by rubicon
We lived in West Des Moines for about 8 years and in that time we had (2) 100 year floods. Yes prediction were flooding possible every 100 years and we had 2 in 8 years  |