Original: The lake is between the provinces of East Azarbaijan and West Azarbaijan, west of the southern portion of the similarly shaped Caspian Sea.
Simplified: It is in the provinces of East Azarbaijan and West Azarbaijan, and is located to the south-west of the close shaped Caspian Sea. Lake Urmia lies between West Azarbaijan and East Azarbaijan provinces.