<html><head></head><body><div>Hi Anna</div><div>I too immediately thought it was enough to compute it for the final step of the simulation,</div><div>but I noticed that the same slope, same ditches, same rainfall, for two reservoirs at the same location, same length along a contour, but different width and depth, at the final step of the simulation the water depth was always 30 cm, I went to read the article </div><div class="csl-bib-body" style="line-height: 1.35; margin-left: 2em; text-indent:-2em;">
<div class="csl-entry">Mitasova, Helena, Chris Thaxton, Jaroslav Hofierka, Richard McLaughlin, Amber Moore, e Lubos Mitas. «Path Sampling Method for Modeling Overland Water Flow, Sediment Transport, and Short Term Terrain Evolution in Open Source GIS». In <i>Developments in Water Science</i>, 55:1479–90. Elsevier, 2004. <a href="https://doi.org/10.1016/S0167-5648(04)80159-X">https://doi.org/10.1016/S0167-5648(04)80159-X</a></div><div class="csl-entry">where I read the Saint-Venant equation. I am an agricultural technician and geographer unfortunately ignorant of hydrological calculations and serious mathematics, and I understood, looking at the equation, that the water depth is the depth of overland flow = rainfall exces - water flow.</div><div class="csl-entry">So the final 30 cm should not be understood as accumulated water, but as the blade of water that was added at that precise moment.</div><div class="csl-entry">Isn't my interpretation right?</div>
<span class="Z3988" title="url_ver=Z39.88-2004&ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzotero.org%3A2&rft_id=urn%3Aisbn%3A978-0-444-51840-8&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Path%20sampling%20method%20for%20modeling%20overland%20water%20flow%2C%20sediment%20transport%2C%20and%20short%20term%20terrain%20evolution%20in%20Open%20Source%20GIS&rft.publisher=Elsevier&rft.aufirst=Helena&rft.aulast=Mitasova&rft.au=Helena%20Mitasova&rft.au=Chris%20Thaxton&rft.au=Jaroslav%20Hofierka&rft.au=Richard%20McLaughlin&rft.au=Amber%20Moore&rft.au=Lubos%20Mitas&rft.date=2004&rft.pages=1479-1490&rft.spage=1479&rft.epage=1490&rft.isbn=978-0-444-51840-8&rft.language=en"></span>
</div><div><span><pre>-- <br></pre><pre>--
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</pre></span></div><div><br></div><div><br></div><div>Il giorno lun, 31/07/2023 alle 14.34 -0400, Anna Petrášová ha scritto:</div><blockquote type="cite" style="margin:0 0 0 .8ex; border-left:2px #729fcf solid;padding-left:1ex"><div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Jul 30, 2023 at 6:01 AM bonushenricus <<a href="mailto:bonushenricus76@gmail.com">bonushenricus76@gmail.com</a>> wrote:<br></div><blockquote type="cite" style="margin:0 0 0 .8ex; border-left:2px #729fcf solid;padding-left:1ex"><div>Hi<br>From r.sim.water, how can I calculate the volume of water stored in<br>small water storages placed along a relief and connected to ditches?<br>In this article <a href="https://doi.org/10.1016/j.agwat.2023.108398" rel="noreferrer" target="_blank">https://doi.org/10.1016/j.agwat.2023.108398</a> these<br>Italian researchers with r.sim.water manage did this calculation, but I<br>do not understand how. With a calculation at different times on<br>discharge at the entrance to the water storage?<br>I tried to contact them, but they did not reply.<br>Thanks!<br></div><br></blockquote><div><br></div><div>Hi,</div><div><br></div><div>volume would be simple depth times cell size squared for a certain selected area. I would compute it for the final step of the simulation, I am not sure what is the purpose of summing it for different time steps. Perhaps you could clarify a little bit?</div><div><br></div><div>Anna</div><div> </div><blockquote type="cite" style="margin:0 0 0 .8ex; border-left:2px #729fcf solid;padding-left:1ex"><div>-- <br></div></blockquote></div></div></blockquote></body></html>