<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Je viens de voir qu’i y a un tag qui s’appliquerait bien. en tous cas pour les Bras de Saint-Aubin et de Sainte-Gemmes. <div class="">Peut être en rajoutant’seasonal=*’</div><div class=""><br class=""><div class="">Voir ici : <a href="https://wiki.openstreetmap.org/wiki/Tag:waterway%3Driverbank#Varying_water_level_river" class="">https://wiki.openstreetmap.org/wiki/Tag:waterway%3Driverbank#Varying_water_level_river</a></div><div class=""><h2 class=""><span class="mw-headline" id="Riverbed">Riverbed</span></h2><p class=""><tt dir="ltr" class="mw-content-ltr" style="background:#EEF;font-size:1em;line-height:1.6"><bdi style="white-space:nowrap" class=""><a href="https://wiki.openstreetmap.org/wiki/Key:natural" title="Key:natural" class="">natural</a></bdi>=<a href="https://wiki.openstreetmap.org/wiki/Tag:natural%3Driverbed" title="Tag:natural=riverbed" class=""><bdi class="">riverbed</bdi></a></tt> is sometimes used to define the area of the riverbed.
</p>
<h3 class=""><span class="mw-headline" id="River_islands_and_sandbanks">River islands and sandbanks</span></h3><p class="">It is fairly common practice not to map non-permanent and quickly
changing islands (sandbanks) in rivers. Vegetation cover on river
islands can sometimes be used as an indicator for their permanency
although it can also be misleading - there are many examples of
vegetation free river islands that are stable for many years. When
mapping from aerial or satellite imagery comparing images from different
years can be very helpful. </p><br class=""></div></div></body></html>