Template:Category doc drainage basin

 is a sub-category of and part of WP:WikiProject Rivers.

Content
 * This category is intended for all waterbodies (i.e. rivers, lakes, canals, marshes, etc.) that form part of the drainage basin of the main river.
 * To search geographically, use the and.

Key
 * Tributaries are grouped by stream order. The main river heads the list, under "1" are its direct tributaries, under "2" are tributaries of "1" and so on. For example, for the Zusam, a direct tributary of the Danube. "0" is used for branches of a delta, old river branches, backwaters, braided streams, anabranches, and rivers that flow directly into sea.


 * Other waterbodies are grouped as follows: "B" for bogs and swamps, "C" for canals and other artificial waterways, "L" for lakes and lochs, "G" for glaciers, "R" for reservoirs and artificial ponds, "S" for springs, and "W" for waterfalls, e.g. for the Amselsee.


 * River basin categories are also grouped by stream order, into all higher-order basin systems.