Use 'deluge' to describe an overwhelming quantity, suggesting difficulty in handling it all. The charity was grateful yet overwhelmed by the deluge of donations.
Pro Tip 2/3
Sudden Onset
'Deluge' implies a sudden and possibly unexpected influx of something. After the celebrity endorsement, there was a deluge of interest in the product.
Pro Tip 3/3
Figurative Use
'Deluge' is often used figuratively to discuss abstract things, like information or emotions. The deluge of conflicting news reports caused widespread confusion.