Before the account proper we learn that Tubal-Cain ‘forged all kinds of tools out of bronze and iron (Genesis 4:22)’. Tubal-Cain’s particular skillset is helpful because it places Noah’s flood after the dawn of the Bronze Age (4000 BCE).

The Sumerian King List

is even more specific, placing its flood in the Jemdet Nasr Period (2900 BCE).