[Talk-GB] Mapping Attenuation Ponds / Sustainable Drainage schemes
edloach at gmail.com
Sun May 7 17:28:55 UTC 2017
That seems to be what I settled on too, e.g. http://www.openstreetmap.org/way/189511931
From: Chris Hill [mailto:osm at raggedred.net]
Sent: 07 May 2017 17:35
To: talk-gb at openstreetmap.org
Subject: Re: [Talk-GB] Mapping Attenuation Ponds / Sustainable Drainage schemes
[not cross posted]
I have mapped some largish attenuation ponds as landuse=basin, basin=detention here http://www.openstreetmap.org/#map=16/53.7810/-0.4483
These are specifically described by the council, who commissioned them, as flood alleviation. These are supposed to work by quickly filling during heavy rainfall and slowly emptying into the conventional drainage through a restricted outfall thus spreading out the rainfall and preventing flooding.
Chris Hill (chillly)
On 07/05/2017 17:22, Steve Brook wrote:
Many new UK housing estates are required to be built with Attenuation Ponds / Sustainable Drainage schemes as part of their development. These are to control rain water runoff during storms and consist of a pond surrounded by an embankment with a controlled release structure to slow down drainage of the water to the river system.
The relevant features might be
* Low or normal water level of pond
* High water level or top of embankment
* Land use/vegetation between low/high water marks is water tolerant/marsh plants
* Structures for water input and output – often brickwork and filter screens round a pipe.
Has anyone any experience of mapping and tagging such a structure?
Are there any examples of where this has been done?
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