Kallang River
Tributaries of the Kallang River include Sungei Whampoa, the Pelton Canal, and the Bukit Timah Second Diversion Canal. Other rivers that empty into the Kallang Basin, other than the Kallang River, include the Geylang River and Rochor River. All these aforementioned waterways form part of the Marina Reservoir, as a result of the Marina Barrage.