I have some concrete stairs that go down a few feet from the back yard into a basement door. During a heavy rain, water pools on the bottom stair, eventually coming in under the bottom of the door into the basement.
The water comes down the stairs, but additionally from a gap between the house and a patio slab. On the left of the photo, you can see mud and some wood damage. That mud is coming out of the gap. (At ground level, left, is a concrete patio.)
I'm thinking that an economical way of dealing with this may be to bust up the bottom concrete stair, dig down a foot or so, and fill it with large crushed rock. The hope is that during the rain, the water will have time to evaporate or soak into the ground before overflowing.
A couple questions:
- Is this a viable plan?
- What's the best way to bust up that bottom stair without damaging the stairs its attached to?
- Is there a better option I should be considering?