Water drainage from rain must be taken away from the house. Underground downspouts do this, but the water cannot just sit in the conduit, it must drain out of the pipe, too .
By adding a french drain, the water will be absorbed into the ground and dissipate. Also, attach a filter at the house downspout. And pop-ups aren’t good enough, use a cover for access to remove leaves.
See proper construction at http://www.mrhardware.com/articles-and-videos/underground-downspouts-move-water-discharged-from-house/