Types of River Regimes
River regimes describe the characteristic annual variation in a river's flow. Several distinct types are recognized:
Nival Regime
This regime, known as the Nival Regime, is typical of higher mountain areas where waters freeze in winter, leading to a period of low flow. From early spring to late summer, the river receives a significant contribution from meltwater, resulting in increased flow.
Nivopluvial and Pluvionival Regimes
In these regimes, both nival (snowmelt) and pluvial (rainfall) factors combine. The nival factor is typically felt earlier than in purely nival regimes. These rivers are also influenced by rainfall during wetter months. Such fluvial regimes, often referred to as Nivopluvial and Pluvionival Regimes, occur...