. Install the splash block directly under the downspout. It should carry water at least 3 feet away from the house. . Adjust the angle of the splash block to ensure it slopes down and away from the house. You may need to do some digging. The ideal angle is a slope of 6 inches in 10 feet. . Check the downspout when you're cutting grass. Avoid running over it with the mower, as this can drive it into the ground and change the angle. .
