Deluge dream meaning is explained below using 4 different sources. Each interpretation is shown with its source.

Interpretation 1 — Martha Clarke

Science has confirmed the historical events of the Great Flood; a catastrophe that destroys the forms but not the forces, enabling the emergence of new life. The flood symbolizes the end of a period because, like any rain, it brings purification and regeneration. Ultimately, this involves the idea of rebirth. In the oneiric field, a deluge announces the shipwreck of your emotions.

If you are experiencing serious emotional problems, this dream suggest you need to end the relationship that is causing you trouble.

Source: The Big Dictionary of Dreams Author: Martha Clarke

Interpretation 2 — Stearn Robinson - Tom Corbett

Avoid controversy of any kind with friends, family, or associates after a dream of a heavy down- pour. Arguments at this time could have unex- pectedly unhappy, if not unfortunate, repercussions. Play everything very cool for the time being.
Source: The Complete Guide to Interpreting Your Dreams Author: Stearn Robinson - Tom Corbett

Interpretation 3 — Katherine Taylor Craig

Overwhelming business loss (Artemidorus); symbolism obvious, financial affairs are usually indicated by storms, rain, etc.
Source: The Fabric of Dream Author: Katherine Taylor Craig

Interpretation 4 — Internet Archive - Anonymous

A heavy downpour of rain is an omen of bad luck in your love affairs. Avoid quarrels.
Source: Mystic Dream Book Author: Internet Archive - Anonymous