THERMODON was a River-God of Pontos and Assyria, in Anatolia (modern-day Turkey).

The Thermodon river issued into the Black Sea, near Thermiskyra, the legendary capital of the Amazones. The major neighbouring rivers (personified) were the Halys of Paphlagonia in the west, and the Phasis of Kholkis to the east.

Pseudo-Hyginus, Preface (trans. Grant) (Roman mythographer C2nd A.D.) :
"From Oceanus and Tethys [were born] the Oceanides . . . Of the same descent Rivers: Strymon, Nile, Euphrates, Tanais, Indus, Cephisus, Ismenus, Axenus, Achelous, Simoeis, Inachus, Alpheus, Thermodon, Scamandrus, Tigris, Maeandrus, Orontes."

Sources:

• Hyginus, Fabulae - Latin Mythography C2nd A.D.