According to the Wanstead and Woodford Guardian the Environment Agency has put the River Roding on Flood Alert for the whole of this coming weekend - 27/28 February 2010.
Here is the "Redbridge Council Emergency Updates" blog set up to provide "Information on service disruptions in the London Borough of Redbridge. If we are unable to update www.redbridge.gov.uk then information will appear on this blog." As you can see it was used this time last year for this very reason. But there is nothing there, and as far as I can see there is nothing on the Redbridge-i site either. There is flood advice but you have to search for it.
You'd think they would have a link on the front page at these times - wouldn't you?