Hello, I have a deck in front of the property. It is 1 feet above the ground. The earth under the deck is sloping towards the property (foundation wall). I would like to have some thing install so when it rains the water move away from the foundation wall. The deck is small. It is 6 feet by 4 feet. It is difficult to work under the deck because there is not much room between earth and deck. How I possibly make the water stay away from the underdeck wall

Thank you