River drainage. Artwork of the lower section of a drainage basin. A drainage basin is the area of land surrounding a major river. It is composed of a system of smaller rivers and streams (tributaries),lakes and other surface run-off channels that all drain to the main river before it reaches the sea at its mouth (bottom). The source (beginning) of many rivers,is in upland and mountainous areas (top) | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Hks, Gary |
Bildgröße: | 3290 px × 3859 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |