Why is my basement drain backing up when it rains?

Rain can cause a backup in a basement drain if the drain is tied to a storm sewer, or if there is an issue with the drain pipe. Often a rising water level from rain can cause the lowest parts of a basement floor to get wet first, which may make it appear as though water is coming up through the drain.Click to see full answer. Subsequently, one may also ask, why is my basement drain backing up?When water is backing up out of your floor drain, the causes are many. It typically means the house drain under your basement floor is full of water. That can mean a rainstorm has surcharged the drain system, or even the public sewer system. A main line clog can be in the house drain, house trap, or house sewer.Also, how do I stop my basement from flooding in heavy rain? To keep you and your basement dry, here are seven ways you can prevent basement flooding. Clean and maintain gutters and downspouts. Properly landscape your yard. Inspect and repair foundation cracks. Practice proper sump pump maintenance. Inspect sewers and clean septic systems. Install window well covers. People also ask, why does my plumbing back up when it rains? Sewer line backups occur when there is simply too much water for the drain to handle, causing the backflow to retreat into your home’s plumbing system. If the volume of water is great enough, it could seep up through the drains in your home, beginning at the lowest level.How do I stop my basement drain from backing up? Preventing a basement drain back up Water in your drain traps is the barrier between you and sewer gases. Making sure all trap and clean out plugs and caps are on tightly can also prevent the escape of sewer water and sewer gases. Basement drains are easy to forget until they become clogged.