Sultan Iskandar Reservoir, reservoir in Johor Bahru, Johor, Malaysia

Sultan Iskandar Reservoir is an artificial lake east of Johor Bahru, Johor, Malaysia. It is about 5 km long and 2.5 km wide at its widest, with a strongly branched shape. Several small rivers feed it through long side arms, and it drains via the Layang River into the Johor River.

The reservoir is named after Almarhum Sultan Iskandar, the late Sultan of Johor, also known as Mahmud Iskandar Ismail, the eighth Yang di-Pertuan Agong of Malaysia. The sources give no construction date or purpose beyond the naming, so its origin is tied to this dedication rather than to a documented flood-control project.

The reservoir takes its name from Almarhum Sultan Iskandar, the late Sultan of Johor, and the German sources also identify him as Mahmud Iskandar Ismail, the eighth King of Malaysia. Its Malay names are Takungan Air Sultan Iskandar and Empangan Sultan Iskandar, the latter using the word empangan for dam.

The reservoir lies east of Johor Bahru in Johor; the branching arms fed by small rivers and drained by the Layang River into the Johor River make the shoreline long and irregular, so plan a route rather than expecting a single loop path. Approach by road from Johor Bahru.

The reservoir is named after Almarhum Sultan Iskandar, the late Sultan of Johor, and German sources also identify him as Mahmud Iskandar Ismail, the 8th King of Malaysia. Its long, branching arms follow the courses of several small rivers that feed it.