While I have no issues with govt (local or otherwise) using Facebook, I do not think that they should use it exclusive of their official channels of communication.
I agree. But, I also see why they rely on social media. Updating a website requires tooling and knowledge. For a small community, that can be a challenge. Facebook and Twitter have mastered the tech to allow pretty much anyone to make updates that can be disseminated to an interested audience.
In a fast moving situation things get dicey. I referenced trying to follow updates on a wildfire near a friend. To expand: I think it was the Glenwood Springs fire (2 years ago, started on 4th of July iirc). The fire moved fast, and the FD was pushing updates to their website, but they were relying on FB to provide detailed info. What was happening on FB was crazy. People were making claims that the fire was where it wasn't, and other people were denying that was the case so the end result was a fog of confusion for events that could have catastrophic results if people made the wrong decision based on this info.
My issue was that FB was protecting some info (I'm not sure if this was due to me continually refusing to login and FB deciding that I had viewed enough info without logging in, or the FD ignorance of how to make their updates public). So, if I did not have a FB account, I could not view detailed info.
I have a lot of beefs with twitter, but at least with their stuff the publisher has to enact specific privacy to stop the public from viewing what is tweeted.
In the course of revisiting this, I went back to the FD that was dealing with this and I note that they have since enacted an emergency notification system where you can subscribe to a service via your cell phone and you will directly receive emergency notifications from them. Of course, this is a very wealthy community and this solution is probably not viable everywhere.