About 30% of the city's storm drains flow to a treatment plant, according to the D.

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In south-east Georgia, Camden County officials sent out teams to clean out storm drains and ditches in preparation for possible flooding.

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Often such places are abandoned or off-limits, and gaining entrance can mean running across subway tracks, crawling down storm drains or climbing up bridges, illegally.

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When most of us think of infrastructure, we think of the built environment: roads, bridges, airports, power plants, cell phone towers, storm drains.

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They also deployed 275 filters in Norwark, Conn. in storm drains that empty into Norwalk Harbor, and eventually into Long Island Sound.

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In areas where Waste Management already handles trash pickup, it would be relatively easy for its crews to stop by the storm drains to clean out captured debris and change out filters.

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There is the rubbish that comes from the land, delivered by run-off, storm water drains and the wind-blown rubbish that people leave behind.

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This can include clearing drains, improving storm barriers and coastal defences, or putting in place planning regulations to discourage development in high-risk areas such as flood plains.

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