You definitely do not want to come home to that. It is best for you to hire a professional for rain water tank cleaning purposes. They will be able to use advanced equipment to ensure the drain is not clogged. If it is, they can use the equipment to get rid of the problem with ease. This is certainly a job you will not want to perform yourself. Now you know everything you need to know about storm drain cleaning. Make sure you keep it free from debris so that it does not back up and cause flooding.
If it does, the structure of your home may be damaged, and the landscaping will almost certainly be affected. Make sure you never pour harmful chemicals down these drains either since they typically lead to nearby bodies of water that are used as a rain water tanks Henty source.