<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div></div><div>Hi,</div><div><br></div><div>The first thing to do is to fill sink algorithm. Most importantly, do NOT save this output as a tiff. Just leave it as a temporary file. This way, It will keep the SAGA format.</div><div><br></div><div>Then use this temporary layer to make the bassins and river channels. It looks like there is a bug when saving the sink free raster as a tiff. Results are very different in the bassin file. If you can reproduce, tell me. We should do a bug report.</div><div><br></div><div>Nicolas</div><div><br>Le 26 nov. 2018 à 05:48, <<a href="mailto:jillb@south-gis.co.za">jillb@south-gis.co.za</a>> <<a href="mailto:jillb@south-gis.co.za">jillb@south-gis.co.za</a>> a écrit :<br><br></div><blockquote type="cite"><div>
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</o:shapelayout></xml><![endif]--><div class="WordSection1"><p class="MsoNormal">Hi all.<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">I’m trying to generate rivers from SRTM data in Cameroon.<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">I’ve done a few tests using the SAGA tools – Channel Network and Channel Network and Drainage Basins. However, I’m not getting any useable answers out. I’m not sure if my parameters are incorrect or what.<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">The size of the area I am trying to generate rivers for is 110km x 110km (One SRTM scene).<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">I am on the latest version of QGIS – 3.4.1.<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">Many thanks<o:p></o:p></p><p class="MsoNormal">Jill<o:p></o:p></p></div><div id="DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2">
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