The answer to 'DIY drainage system' is that creating a basic DIY drainage system can be a manageable project for many homeowners. This involves installing drainage pipes, grading the soil, and creating swales or dry creek beds to direct water away from your home's foundation.
Start by identifying problem areas where water collects after heavy rain. Dig shallow trenches to install perforated drainage pipes that will carry water away. Make sure the pipes slope downward and connect to a discharge point like a dry well, rain garden, or street drain. You'll also want to regrade the soil around your home so it slopes away from the foundation at a 2-5% grade. Adding swales or dry creek beds can further improve drainage by creating natural channels for water runoff.