The two rivers also have extensions that flow into the mainland portion of the region. Sungei Pandan has a western branch, Sungei Ulu Pandan, which flows from Jurong East into the town of Clementi before cutting off at Queenstown located east of Clementi. Sungei Jurong channels out of Jurong Lake via a stream located west of the lake and Jurong Canal located directly north of the lake. The canal also serves as the boundary line between the towns of Jurong East and West.