The most part of the rivers in the Upper Volga basin are small ones less then IG km long. The rivers of this kind are under strong impact of surrounding conditions especially in the spring. Upper elements of small rivers' network are located in the hydrological-geomorphological centers - peculiar landscapes of the upper parts of the elevations and their slopes. The hollows of initial run-off are disposed in the marginal parts of elevations. Drainage of these centers and their margins leads to the die-away of the important parts of river basins - their upper elements. Water protection zones of river basins should therefore comprise small rivers, rivulets, and their headstreams.
The most part of the rivers in the Upper Volga basin are small ones less then IG km long. The rivers of this kind are under strong impact of surrounding conditions especially in the spring. Upper elements of small rivers' network are located in the hydrological-geomorphological centers - peculiar landscapes of the upper parts of the elevations and their slopes. The hollows of initial run-off are disposed in the marginal parts of elevations. Drainage of these centers and their margins leads to the die-away of the important parts of river basins - their upper elements. Water protection zones of river basins should therefore comprise small rivers, rivulets, and their headstreams.
The authors declare that there are no conflicts of interest present.