Dreams of cobwebs symbolize that you are discovering a part of your power and wisdom that has been long forgotten, neglected, or discarded. This dream can also represent seduction and your ability to lure people to. See Shadow, Spider and Web.
1- Flood dreams are fascinating, because while frightening, they often indicate a release of positive energy. Usually it is an overflow of repressed or unconscious feelings which needs to be got out of the way before progress can be made.
To be in the middle of a flood indicates we may feel we are being overwhelmed by these feelings, whilst watching a flood suggests we are simply watching ourselves. Often a flood dream can indicate depression.
2- If we are not good at expressing ourselves verbally, dreaming of a Hood may allow us to come to terms with our anxieties and worries in an appropriate way.
3- The end of one cycle and the beginning of another. Old grievances and emotional ‘cobwebs’ arc washed away, leaving a clear head and a clear wav forward.... Ten Thousand Dream Dictionary