Charles Ellicott Commentary 1 Kings 7:46

"In the plain of the Jordan did the king cast them, in the clay ground between Succoth and Zarethan." — 1 Kings 7:46 (ASV)

In the plain of Jordan did the king cast them. —The casting was done in the Jordan valley. Succoth is on the east side of Jordan, in the territory of Gad (Joshua 13:27; Judges 8:5)—the place of Jacob's stop on his way from Padan-aram, and of the insult offered to Gideon and his revenge. Zarthan, or Zaretan (Joshua 3:16), is on the western side, in the territory of Manasseh, not far from Bethshan, and nearly opposite Succoth.