Psalm 83:9 asks God to deal with Israel's enemies as He did with Sisera and Jabin at which river?

Answer: The Kishon

Psalm 83:9: "Do to them as You did to Midian, as to Sisera and Jabin at the River Kishon" (KJV: "the brook of Kison").

“Do to them as You did to Midian, as to Sisera and Jabin at the River Kishon,”— Psalm 83:9 (BSB)