Why does your basement flood when it Rains?
Several things can cause this,
1: Houses are built in holes. holes like to fill with water. If the water builds up against the outside of the foundation a little crack or hole in the foundation would allow water to penetrate.
2: Failed footing drains. Around the outside perimeter of the foundation is a perorated pipe in gravel that carries water away from the foundation. Also known as a French drain system. If this system failed to carry water, the water would build up against the outside of the foundation and find a way inside.
3: Property is pitched toward the home. Water will run over the surface of the ground. If it is colliding with your home and has no where to go it will most likely eventually get in. Capuring that water before it gets to your home is the best way to prevent it. Or just re pitch the ground and drive the water away.
Conclsion: These are the most common ways water gets in to the basement. Calling a professional company USA DRAINS located in carmel ny can be the first step to drying out your basement.