The lack of permeable surfaces are loading drainage systems and increasing the risk of flooding.

CNN: Green roofs cool cities, combat climate change, say Germans

Neighbours have raised concerns that it could create a lack of parking in the area and cause problems with the drainage systems.

BBC: Coupee Lane site

We are working hard to persuade planners and developers to use sustainable urban drainage systems, which collect and treat urban run-off before it reaches rivers.

BBC: English and Welsh rivers 'improving'

The trust wanted to move the beds because it said the cottage hospitals were old buildings which were too cramped and had defective heating and drainage systems.

BBC: Devon cottage hospitals' beds move 'paused'

Heavy rainfall or poor drainage systems can trigger a collapse.

BBC: Who, What, Why: How are sinkholes formed?

An inquiry by West Sussex County Council, Arun and Chichester district councils, the Environment Agency and Southern Water is looking into drainage systems, including whether ditches and gullies were blocked and how to improve maintenance.

BBC: More flood-risk homes get Environment Agency warnings

The University of Washington's Richard Morrill notes that the WPA bequeathed "an enduring legacy" around Seattle: bridges and retaining walls and drainage systems, parks and playgrounds, roads and trails, sewers, recreational facilities, airports, streetcars, low-income housing, as well as programs for musicians, artists and writers.

FORBES: New Geographer

An independent review into the 2007 floods said Yorkshire Water had ignored repeated warnings about the state of its drainage and pumping systems.

BBC: Man on surfboard in flooded Hull street