I have done a few posts in the last weeks about people with good intentions, who kind of understand something, but end up missing the mark. You might call it the "close but no cigar" category. The photo below is a good example. This installer must have known that routing gutter water away from the home, and into an underground drainage system, is a good idea. They came up with a way to do this, but it is not working. They seem to have put in the drain and then they installed small grills over that. So the water coming out the downspout hits the ground hard, still bounces back up, collects at the foundation and then a tiny fraction of it makes it's way into the drain. The problem is further complicated by the grill not being in a hole in the ground, no indentation, basically it is about an inch over grade. How much better this would be in the connections were made that would take the downspout over to, and down into, the drain.
Steven L. Smith
Bellingham WA Home Inspections