扎卡河（阿拉伯语：نهر الزرقاء‎，希伯来语：נחל יבוק‎）是约旦河下游的第二大支流，仅次于雅莫科河，也是按年流量排该地区的第三大河流。它的分水线包围了约旦河东岸人口最稠密的地区。它发源于阿曼附近的泉水，沿着既宽且深的峡谷顺流而下，到达约旦，平均海拔1090米。该河现在污染严重，它的治理是约旦环境部需要优先考虑的问题。

扎卡河的形成距今大约有3万年。在其源头有重要的考古遗址艾因·加扎尔。考古学家发现扎卡河流域在过去动植物种群是非常发达的。

The Zarqa River (Arabic:نهر الزرقاء‎, Nahr az-Zarqāʾ, lit. "the Blue River") is the second largest tributary of the lower Jordan River, after the Yarmouk River. It is the third largest river in the region by annual discharge, and its watershed encompasses the most densely populated areas east of the Jordan River. It rises in springs near Amman, and flows through a deep and broad valley (which is identified with the biblical Jabbok River) into the Jordan, at an elevation 1,090 metres (3,580 ft) lower. The river is heavily polluted and its restoration is one of the top priorities for the Jordanian Ministry of the Environment.