The Jabbok is the second largest tributary of the lower Jordan River, after the Yarmouk River.
After he left Harran, Jacob crossed the Jabbok on his way to Canaan. It leads west into the Sukkot Valley across from Shechem. The biblical cities of Zaretan and Adam lie at the mouth of this valley.
Here Jacob met Esau and struggled with the angel. The Jabbok River separated the territory of Reuben and Gad from Ammon.