Need more info. What material covers the area under your deck? Soil, gravel, or a concrete slab? Whatever is down there, it needs to be graded away from the house and away from the stairs.
It would be a good idea to regularly inspect the area under your deck anyway, for signs of pests (termites, etc), to check the part of your foundation that is behind the deck, and so on. If you had to pry up a board to see under there, that's a bad design. You need access to that area. Have you considered making an access door of some kind?
It would be a good idea to regularly inspect the area under your deck anyway, for signs of pests (termites, etc), to check the part of your foundation that is behind the deck, and so on. If you had to pry up a board to see under there, that's a bad design. You need access to that area. Have you considered making an access door of some kind?