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<div class="moz-cite-prefix">On 08-May-17 03:10 AM, Clifford Snow
wrote:<br>
</div>
<blockquote
cite="mid:CADAoPLog_OmNrxUKkQ7CDzbv0fhk4RMrbkD0N3xFv4ztoPo1HA@mail.gmail.com"
type="cite">
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<div class="gmail_extra"><br>
<div class="gmail_quote">On Sun, May 7, 2017 at 10:22 AM,
Steve Brook <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:srbrook@tiscali.co.uk" target="_blank">srbrook@tiscali.co.uk</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<p class="MsoNormal">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. </p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">The relevant features might be</p>
<p class="gmail-m_-5025392766269868123MsoListParagraph"><span
style="font-family:symbol"><span>·<span
style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"times
new roman""> </span></span></span>Low
or normal water level of pond</p>
<p class="gmail-m_-5025392766269868123MsoListParagraph"><span
style="font-family:symbol"><span>·<span
style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"times
new roman""> </span></span></span>High
water level or top of embankment</p>
<p class="gmail-m_-5025392766269868123MsoListParagraph"><span
style="font-family:symbol"><span>·<span
style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"times
new roman""> </span></span></span>Land
use/vegetation between low/high water marks is water
tolerant/marsh plants</p>
<p class="gmail-m_-5025392766269868123MsoListParagraph"><span
style="font-family:symbol"><span>·<span
style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"times
new roman""> </span></span></span>Structures
for water input and output – often brickwork and filter
screens round a pipe.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Has anyone any experience of mapping
and tagging such a structure? </p>
<p class="MsoNormal">Are there any examples of where this
has been done?</p>
</blockquote>
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<br>
These are common where I live. (We get lots of rain from
October to June) I map them as landuse=basin, basin=* based on
how they are designed. See <a moz-do-not-send="true"
href="https://wiki.openstreetmap.org/wiki/Key:basin">https://wiki.openstreetmap.org/wiki/Key:basin</a>
for more info. </div>
<div class="gmail_extra"><br>
</div>
<br>
</div>
</blockquote>
<br>
I have done 2 as detention ponds .. <br>
<br>
<a class="moz-txt-link-freetext" href="http://www.openstreetmap.org/way/282846991">http://www.openstreetmap.org/way/282846991</a><br>
<br>
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