If you want to see how we handle a river flood, in terms of web communications, follow these two sites over the next few days:
http://www.ubefire.com (that's the site I run for the fire company)
http://nockamixonema.wordpress.com (that's the townships official site)
It's not going to be a big deal flood, but you might like how we post and share the same information we get as emergency managers with the public, as we get it. We don't hold ANYTHING back.