Sumugan (
Shumugan) is, in
Sumerian mythology a god of the river plains. In creation myth he is given charge by the god
Enki over the flat alluvial lands of southern
Mesopotamia. He is also known as a god of cattle who dwells in the court of the underworld goddess
Ereshkigal.
References
Michael Jordon, Encyclopedia of Gods, Kyle Cathie Limited, 2002