Middle reach of the Pandan River

From the Reservoir to the Batok Nature Park, the River is characterized by common trapezoidal canals (Plate XI). This section of the River flows through the built-up areas such as Toh Guan Industrial Park, Jurong East Warehouse Complex and International Business Park. These built-up areas were once covered by vegetation with shrubs and grass in the 1980s. The canals drain large amount of stormwater during rain events but have little water during in dry days (Plate XII). Due to its efficiency, most of the solid materials (e.g. sediment, litter and garbage) in the stormwater are washed downstream and eventually to the Reservoir. However, deposition is still common in these canals, in this case along the middle section of the canal where flow velocity decline after the convergence of two upstream tributaries (Plate XII). We suspected most of the sediment is contributed from areas such as construction sites and residential areas as we saw in the video clips.

:: Plate XI ::.

Plate XII

• Clip 2, Sediment contribution from both sides of the road and the construction sites, and the cemented canals with little water throughout the middle reach of the Pandan River. To View clip 2, Click HERE.
• Clip 4a, Tropical rainfall (usually heavy and short), effective water collections of canals and an example of sediment source areas at bus stop. To View clip 4a, Click HERE.
• Clip 4b, An example of sediment source areas at construction sites. To View clip 4b, Click HERE.