Sloping the soil away from the foundation will remedy a wet basement most of the time. The Family Handyman recommends firmly packing clay soil around the foundation, with at least a 4-in. slope over the first 4 ft. Place 6-mil black plastic over the soil and cover it with landscape rock. Install 4- to 6-ft. gutter extensions to your downspouts to direct water farther away from your foundation.
Wet Basement Repair: Curing a Wet Basement: The answer may be a dry well! If your basement is wet and your lawn is too flat or has too much clay to drain, you may need to direct your gutters into a dry well. Learn how to install one properly in this article.
Affordable Ways to Dry Up Your Wet Basement For Good!: Strategies that will permanently fix your musty, wet basement. http://www.familyhandyman.com/basement/affordable-ways-to-dry-up-your-wet-basement-for-good