If the situation escalates and you believe the flooding constitutes harassment or deliberate damage to your property, you could consider filing a police complaint. You may need to provide evidence of the damage caused and any previous attempts to resolve the issue amicably.
If all else fails, you might consider consulting a lawyer about the possibility of filing a civil case for compensation against your neighbors for damages caused. This could involve claims related to mischief (Section 425 of the IPC), nuisance (Section 268 of the IPC), property damage, and trespassing. You can also consider filing a complaint with the local Municipal Corporation which can direct the other party to cease and desist from causing damage to your property.
Before proceeding with a civil case, you could have a lawyer send a legal notice to your neighbors, outlining your grievances and seeking resolution. Sometimes, the threat of legal action might prompt them to take the matter more seriously.
You need to collect evidence in the form of photograph etc which will help you in the litigation
Connect to us for legal documentation if any is required, we would be happy to help.