<div dir="ltr"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
I'd like to make the argument that defining streams, whether they are<br>
called rivers, streams, creeks, brooks or any other such term just creates<br>
unnecessary conflicts. <br></blockquote><div><br></div>I would agree, if one doesn't use a robust classification system. <br></div><div class="gmail_quote">A simple one I use for continental US:stream sizes ( <a href="https://www.nature.com/articles/sdata201917/figures/3">https://www.nature.com/articles/sdata201917/figures/3</a> ) uses hard edge attributes of flow range (m3s−1), the Gradient, the Range (Rise/Run), the average Summer Temperature, and the yearly temperature Range. These attributes end up being the primary differentiation of all streams in the United States, based on a large field of other measurable values ( like 'leaping distance' :-). From <a href="https://www.nature.com/articles/sdata201917/tables/5">https://www.nature.com/articles/sdata201917/tables/5</a></div><div class="gmail_quote"><br></div><div class="gmail_quote">Headwater (HW) <br>Small Creek (SC) <br>Large Creek (LC) <br>Small River (SR) <br>Medium River (MR) <br>Mainstem (MS) <br>Large River (LR) <br>Great River (GR) <br></div><div class="gmail_quote"><br></div><div class="gmail-csl-entry">Considering the wide variety of stream types through estuaries, braids, desert flash floods, alpine snowmelt, and the Mississippi river, eight categories is pretty simple. The details are at:<span style="font-family:arial,sans-serif"><font size="2">McManamay, R. A., & DeRolph, C. R. (2019). A stream classification system for the conterminous United States. <i>Scientific Data</i>, <i>6</i>(1), 190017 <a href="https://www.nature.com/articles/sdata201917">https://www.nature.com/articles/sdata201917</a><br></font></span></div><div class="gmail-csl-entry"><span style="font-family:arial,sans-serif"><font size="2"><br></font></span></div><div class="gmail-csl-entry"><font size="2">The wide variety of terrain and climate found in the US makes it fairly robust for larger areas, but there are also similar global classifications. <br></font></div><div class="gmail-csl-entry"><font size="2"><br></font></div><div class="gmail-csl-entry"><font size="2">Michael Patrick</font></div><div class="gmail-csl-entry"><font size="2">Data Ferret<br></font></div><div class="gmail-csl-entry"><font size="2"><br></font></div><div class="gmail-csl-entry"><font size="2"></font><br></div><div class="gmail-csl-entry"><span style="font-family:arial,sans-serif"><font size="2"></font></span></div><div class="gmail_quote"><div class="gmail-csl-bib-body" style="line-height:2;margin-left:2em">
<span class="gmail-Z3988" title="url_ver=Z39.88-2004&ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzotero.org%3A2&rft_id=info%3Adoi%2F10.1038%2Fsdata.2019.17&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=A%20stream%20classification%20system%20for%20the%20conterminous%20United%20States&rft.jtitle=Scientific%20Data&rft.volume=6&rft.issue=1&rft.aufirst=Ryan%20A.&rft.aulast=McManamay&rft.au=Ryan%20A.%20McManamay&rft.au=Christopher%20R.%20DeRolph&rft.date=2019-02-12&rft.pages=190017&rft.issn=2052-4463&rft.language=en"></span>
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