Hi
If it is the front passenger footwell, open the bonnet, top corner lift up plastic trim, there is a small section cut so it can be folded up, and reach down see if there is any muck / debris blocking the drain about level with the wiper arm but deep down.
Secondly if your blower now works only on fast speed then the water has blown the blower transistor, which often happens when the drain is blocked and water goes into the footwell.
This happened to me by the way.
Regards
Pete
pete topliss
September 2010