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<div><a href="https://wiki.openstreetmap.org/wiki/File:Check_dam_on_Miya_River_(Jinzu_River).jpg">https://wiki.openstreetmap.org/wiki/File:Check_dam_on_Miya_River_(Jinzu_River).jpg</a><br></div><div dir="auto">for me it looks like waterway=weir<br></div><div><br></div><div>"Solid check dams usually have water flowing over only a small part of their width and<br></div><div dir="auto">are designed to handle sudden increases in water flow."<br></div><div dir="auto"><br></div><div dir="auto">Are you sure that thing depicted on image is not also a weir?<br></div><div dir="auto">And "designed to handle sudden increases in water flow." is applicable to<br></div><div dir="auto">any sanely constructed waterway engineering.<br></div><div dir="auto"><br></div><div dir="auto">See <a href="https://en.wikipedia.org/wiki/File:Culverts_under_yass_river_walkway_weir.JPG">https://en.wikipedia.org/wiki/File:Culverts_under_yass_river_walkway_weir.JPG</a><br></div><div dir="auto">on Wikipedia weir page.<br></div><div dir="auto"><br></div><div dir="auto">Or <a href="https://en.wikipedia.org/wiki/File:Grial%C3%ABces_cuecenes.jpg">https://en.wikipedia.org/wiki/File:Grial%C3%ABces_cuecenes.jpg</a> with description<br></div><div dir="auto">"During periods of high river flow, this nineteenth century weir of porphyry stone on <br></div><div dir="auto">a creek in the Alps would have significantly more water flowing over it."<br></div><div dir="auto"><br></div><div>Jun 7, 2021, 17:33 by enno.hermann@gmail.com:<br></div><blockquote class="tutanota_quote" style="border-left: 1px solid #93A3B8; padding-left: 10px; margin-left: 5px;"><div dir="ltr"><div>Dear all,<br></div><div><br></div><div>I have written a proposal for tagging check dams - barrier structures on mountain streams to reduce the speed of flow, prevent erosion and hold back debris during torrential flow events: <a href="https://wiki.openstreetmap.org/wiki/Proposed_features/Check_dam" rel="noopener noreferrer" target="_blank">https://wiki.openstreetmap.org/wiki/Proposed_features/Check_dam</a><br></div><div><br></div><div>Please discuss this proposal on its Wiki Talk page.<br></div><div><br></div><div>Best,<br></div><div>Eginhard<br></div></div></blockquote><div dir="auto"><br></div> </body>
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