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[[File:Clogged drain.jpg|thumb|Street drain clearly clogged by 9 squares of 32 = 28 %]]
[[File:Clogged drain.jpg|thumb|Street drain clearly clogged by 9 squares of 32 = 28 %]]
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==Grates and orifices==
==Grates and orifices==
Debris in stormwater is often deposited in the narrowest parts of our low impact development systems. Garbage, leaf litter and sediment all contribute towards the clogging of these structures.
Debris in stormwater is often deposited in the narrowest parts of our low impact development systems. Garbage, leaf litter and sediment all contribute towards the clogging of these structures.