basement floods every time it rains 13

https://wiki-site.win/index.php/Understanding_Basement_Water_Causes_and_How_to_Prevent_Flooding

Our basement floods every time it rains, turning the space into a shallow swimming pool within an hour. I've unclogged the floor drain twice and even checked the grading around the foundation, but water still seeps up through the cement cracks. The sump pump runs nonstop during a storm, and we have to move storage shelves onto cinder blocks to keep boxes dry. It's a frustrating cycle of shop-vac duty and bleach scrubbing to stave off mildew.