Basements are often in danger of flooding, but if yours floods on a regular basis, it may help to have your topsoil graded. Soil should be higher around your foundation and slope downward away from your home. When your foundation is built too deep, or settles into the ground after some time, water will be more likely to seep or leak into your basement.
To rectify this issue, some guidelines that are put in place include ensuring that foundations’ tops are set at least six inches above the surrounding soil, and that the ground is angled downward, so that the soil 10 feet from the house is at least six feet lower than the soil at the base of the house. The larger the slope, the less likely you will have to deal with leaks.
It is also important to take other nearby structures, and the soil levels, into consideration.