What is the…
Ulai

also known as: Eulaus

Hebrew: אוּלַי —transliteration: Ulay

Greek: Εὔλαιος

This is a river of ancient Susiana. The Greeks called it the Eulaus.

The same river is mentioned in the Gilgamesh Epic, where it is called “the sacred river u-la-a”). Another name for Gilgamesh is Nimrod.

It was probably the eastern branch of the Karkheh River (aka Kerkhan, Choaspes, Choasper, Χοάσπης), which divided into two branches some 20 miles above the city of Susa (aka Shushan). It originates in the Zagros mountain range, and as it joins other rivers it eventually empties into the Persian Gulf.

Today it is located in modern Iran (formerly Persia).

The prophet Daniel speaks of standing “between the banks of Ulai”, i.e., between the two streams of the divided river (Dan. 8:2, 16).

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Article Version: May 1, 2025