Primary watercourse

An elongated reduction in the terrain of natural or artificial origin containing permanently or periodically running water.Explanatory noteArea waters whose length is significantly greater than the width. In addition to specific names, there are many others in use: draught, wetering, sailing, ditch, canal, pipe, open pipeline, corridor, neighborhood, priel, trench etc. These terms are often used regionally to indicate watercourses of certain dimensions, function, origin, management status, e d. The names also indicate a certain order of importance or size which is not generally valid. In the case of drainage, it is therefore recommended to indicate the ranking in a watercourse system with (large to small) primary, secondary and tertiary.