Our driveway slopes down towards the front of the garage, and at the lowest point, their is a drain. This is a good thing. Unless the water is coming down faster that it goes away at which point it likes to visit the interior of the garage. Well, after 20-plus years of stuff washing down the drain, it's full. What's the best way to get this thing cleaned out? I have no idea where the drain goes, or what the water does when it gets there.
The drain is in the circle on the upper right. The drain cover (lower left) has been removed for the picture.