<div dir="ltr">The Wikipedia defintion of "cistern" is much wider than the toilet cistern: <a href="http://en.wikipedia.org/wiki/Cistern">http://en.wikipedia.org/wiki/Cistern</a><br><br><br><br></div><div class="gmail_extra"><br><div class="gmail_quote">On 1 February 2015 at 10:21, Warin <span dir="ltr"><<a href="mailto:61sundowner@gmail.com" target="_blank">61sundowner@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div>On 31/01/2015 10:49 AM, S Volk wrote:<br>
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<div>Hi,</div>
<div>I've been mapping on Africa in HOT tasks and around, I've
seen some cisterns, also know that some humanitarian NGOs have
made many cisterns on Africa (also water_wells).</div>
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<div><span style="font-size:12pt">Question:</span></div>
<div><span style="font-size:12pt">How to tag a cistern (i</span><span style="font-size:12pt">t seems to be not like what is
shown for "landuse=reservoir"; rather </span><span style="font-size:12pt">a small "man made" reservoir, on
ground level or escavated, for either natural or treated
water)?</span></div>
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<div><span style="font-size:12pt">Or, in addition, s</span><span style="font-size:12pt">ince there are tags for </span><span style="font-size:12pt">"man_made=water_well, </span><span style="font-size:12pt">"man_made=</span><span style="font-size:12pt">water_tower</span><span style="font-size:12pt">"</span><span style="font-size:12pt">, w</span><span style="font-size:12pt">ouldn't it
be worth to have a tag like </span><span style="font-size:12pt">"man_made=cistern"? </span></div>
<div><span style="font-size:12pt"><br>
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<div><span style="font-size:12pt">Thank you in advance,
regards,</span></div>
<div><span style="font-size:12pt">Sérgio (user:SergioAJV)</span></div>
<div><span style="font-size:12pt"><a href="mailto:svolk2@hotmail.com" target="_blank">svolk2@hotmail.com</a></span></div>
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</div></div><big><br>
A 'cistern' has a mechanism for keeping a water level stable,
commonly used in toilets. And OSM has no tag for that feature
(yet). They are connected to a water supply with some pressure
behind it. <br>
<br>
I'd think you want to map the provision of water? <br>
If it is 'drinkable' then the generic amenity=drinking_water would
suit? <br>
If non potable then amenity=watering_place ? <br>
<br>
If you don't know if it is drinkable then assume not, so use </big><big>amenity=watering_place
? Maybe add a note ? <br>
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