Station 2: Rain Garden

What is it?

• It is a bioretention basin which collects, retains and treats rainwater runoff that flows from the park

• This filtered rainwater is further treated and reused in the water play area and wading stream
• There are a total of 10 species of plants in the Rain Garden

Advantages of such a system:

• Encourages the creation of habitats and encourages biodiversity between plants and animals, as evidence from the variety of fauna located there eg. spiders
• Prevents algae bloom:

                 - Plants act as a filter to sift out the algae

               - Absorbs excess nutrients like nitrates and phosphorus that

causes algae bloom   

                                                                                 

• Which thus ensures survival of marine life with clean water provided for them

How does the Rain Garden work?

Reflection:

Being a small country with no natural resources, Singapore needs to come up with ways to sustain its population, eg. water supply for all. 

Through this activity, we learnt that Singapore collects water from the rain garden.The bioretention swales serve to treat rainwater and acts as a filter to remove dirts and chemicals, so as to obtain cleaner water.

This water is then channeled into the reservoir, a water catchment area. The water in the reservoir will ultimately be further purified in the water treatment plant.