Where'd this water come from?

It's got to be from the sprinklers that watered the lawn. But why is it still there? Flooded? Late watering? There wasn't water anywhere else.

My God, I'm boring. I'm even boring myself with these mundane photos. I need some excitement, but I'm too boring and lazy to create some. I'm also too lonely. I feel like I'd be more inclined to do something if I was with someone, but since it's just me, I do nothing.