Embedded Files
How clean is our waterway?
The students observed the human activities around the Punggol waterway as well how human activities are affected by the waterway. The students also did a field sketch of the waterway.
11 March 2019
The dam built across the waterway to trap the water
Some construction on the opposite bank
Tug boat captured in the morning bringing the construction materials. How would this affect the waterway?
Temperature was low at 24.1 degree Celsius and it was very windy and rained.
4 March 2019
floating turbidity barrier help to stop silt from entering the water body and also keep the aquatic vegetation in place. It also help to trap rubbish and prevent it being washed into the water.
floating turbidity barrier at the reservoir
oxygen pump which helps to ensure higher dissolved oxygen level to support aquatic life
Field sketch and observations
Field sketch
students sketching and also noting down their observation
The beautify and clean waterway - a place where people relax. A bridge as seen in the background helped to connect the two river banks.
The dam help to trap the body of water to form the reservoir.
The sign board which remind the people not to litter and pollute the reservoir.
The workboat which helps to clean the waterway parked at the side of the dam.
Water boat with conveyor belt to pick up litters from surface of water
Aquatic plants help to naturally purify the water and improve the water quality
Algae on surface of water depletes oxygen level in the water
This was done earlier in class- water testing.
PH value of 7
Dissolved oxygen level of 4ppm
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