Where does all that rain go? Stormwater Management in London
Slide 2 What is Stormwater? 2 Slide 3 Rain + Snow + Outdoor Water
Use = STORMWATER Stormwater travels either directly to the Thames
River or to stormwater management facilities around the City,
eventually ending up in the Thames River. 3 Slide 4 1.Man-made and
natural drainage features collect and manage stormwater 2.Above the
ground, water travels through eavestroughs on buildings, grass
swales or ditches. 3.Catchbasins under the road collects water
4.Maintenance hold provide access 5.Outfalls are the exit points
from the underground pipe system 6.Wet ponds collect rainwater,
runoff and melting snow. 4 The Path of Stormwater Slide 5
Stormwater Management in London 5 Stormwater Management Pond Sewer
Lines and Catchbasin Storm Sewer Outfall Storm Sewers Slide 6 What
happens without Stormwater Management? 6 Slide 7 Beyond the City of
London 7 We are in the _____________________ watershed. The Thames
River ends in __________________. Our stormwater ends up in the
____________ watershed. True of False: Anything we put down
stormsewers in London will eventually end up in Lake Erie. Slide 8
Stormwater Pollution Source of Pollution Gasoline 8 Slide 9 Algae
Blooms: Lake Erie 9 Stormwater entering Lake Erie: 80% is from
agriculture in the watershed, 20% is from urban areas in the
watershed. Of that 20% from urban areas: 12% is from stormwater 8%
is from Pollution Control Plants. Source: International Joint
Commission, Lake Erie Ecosystem Priority, August 2011 Photo:
International Joint Commission, Lake Erie Ecosystem Priority,
August 2011 Slide 10 How do we reduce stormwater pollution?
IdealsApplication Rain Barrels Encourage homeowners to purchase and
install a rain barrel at their home. 10 Slide 11 The Future New
Challenges in Stormwater Management = CLIMATE CHANGE Climate change
will result in an increase in precipitation in London causing: New
strategies to make sure new projects can deal with increases in
stormwater (bridges, pipes, ponds, etc.), The need for assessing
and upgrading existing infrastructure, and An increase risk of
flooding due to more frequent intense storms (making the above
points more important). 11 Slide 12 Solutions? What can you do?
Make a commitment to reducing stormwater and protect your
environment. 12
