Blocked Culverts

A friend of ours nearly got flooded in that heavy rain before Christmas; in fact the houses up her street did get flooded.
The comments that I found interesting were when she said that they had never been flooded there before and that it was a blocked culvert that had caused it.
I totally believe that God is always on the move and that He rarely blesses in the same way twice, and if He does then that is His choice not ours. But often it can come as a surprise, a feeling of "well I have never seen God move like that before" or whatever. But also that a times something that should've been a blessing in fact floods us and washes things away = in fact with this flood it got into the drains and many of the houses have sewage in them = and this happens to us because have got things in our lives that cause blockages for God to do all He wants. That we have blocked culverts in our lives, whether through bad things we've done, ways we have just moved off of what God wants or just not looking after something the way it should be.
I do believe if we are not careful in both our personal lives, family lives, church lives, churches, etc, etc we can get a huge blessing from God but because we haven't kept something clear then what should've been a blessing becomes something that brings up all the sewage in our lives, in our communities - whatever they maybe - and leaves something that will take a lot of clearing up rather than will water our land.
Even with having to deal with a horrid cough which is keeping me away I am looking into what things in my life could change the blessing of God into something horrid.