Water Kit - Hunter Water

the drain is just for rain
worksheet 2
Stormwater drains collect stormwater and transport it through pipes and canals to a variety of sites in the local area. Some
stormwater first flows into stormwater detention ponds, where the water slows down and allows some pollutants to settle out
In the end all stormwater is discharged to local creeks, rivers or wetlands.
Depending on the size of your school grounds it may have a large number of stormwater drains, with a network of stormwater
pipes buried beneath the ground that links each of the drains. This stormwater drainage system helps to keep the ground’s
surface free from large puddles of water or muddy areas during wet weather.
1 Before this investigation take a guess at how many drains there are in your school:
.
2 Go into your school grounds and take notes on the stormwater system for your school.
Investigate how many drains there are and what state they are in.
Are they clogged with rubbish? Are they located in sensible positions or do they create a potential hazard?
types of drains number description
Small round drains at the
bottom of down pipes of roofs
Long thin drains running
across paths or playgrounds
Small square drains in
concrete areas
Large square drains with
a grate across the top
Open drains that may be
grassed or concrete lined
Large drains built into
the gutters in roads
Other drains
3 How many stormwater drains are there in your school grounds?
Is this what you expected?
4 Next time it rains, observe and describe what happens to the stormwater:
Is the stormwater flowing into the drains or just making puddles?
Water kit . ssS . 001 . april 2010
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