| English | Polish |
| built drainage system Collection of open and/or closed drains, together with structures and pumps used to collect and dispose of excess surface or subsurface water | systemy odwodnienia (urządzenia i sposób odprowadzania nadmiaru wody) |
| drainage system | dorzecze (ciek powierzchniowy wraz z dopływami; A surface stream, or a body of impounded surface water, together with all other such streams and water bodies that are tributary to it and by which a region is drained. An artificial drainage system includes also surface and subsurface conduits) |
| natural drainage system | system naturalnego odwodnienia |
