Hey all, I'm building a run for my 8 ducks, it's 20 x 16. Just past the run, toward going toward the back of the property, the ground slopes down to a small stream. MY soil doesn NOT drain well, as I've learned since having ducks! They hatched in September. I'm thinking of some mix of sand and pea gravel, but I think I will definatley need to drain things. Do I need concrete? a grate over it? pipe? thanks for any help!
Dawn

Dawn