Hi Anne,
The sump pump keeps water out of the basement, but just spills out further in the yard (down slope). It turns on infrequently, mostly during large rain events.
With the swales, I was hoping to trap runoff to feed trees and other edibles. And it seems like I can store a lot more water in the ground than in rain barrels. I guess I'm concerned about where the water table is so I should maybe just dig some holes and check if water seeps in, or absorbs