It’s been some time since Ol’ Wally has presented you humans with a good solution for water runoff, like this one. This rock stream directs the water, but lets water soak into the soil, instead of channeling it totally away.
Notice how that grass is thicker and greener right up along the edge?
Have you seen any good water drainage systems lately? Send them on to Nutmeg and she’ll pass them to me to share.