the Berasit Hebrew Dictionary

Note - the chapters and verses in the Bible are not original breaks and often do not align with the natural breaks in the text. The first section of Genesis actually spans from Gen 1:1 to Gen 2:4. This second section begins in Gen 2:5

hedeqel, which is a transliteration of the Akkadian word 𒁇𒄘𒃼, “Idiqlat”, the name of the river we now call the Tigris.

The fact that the Hebrew word is based on the Akkadian rather than the Sumerian or Babylonian spellings allows the dating of the book of Genesis as contemporary to the Akkadian period, no earlier than about 4500 years before present.