The Ganga : As its hydrograph shows that the flow pattern of the Ganga attains the sizeable flow in the early summer because of snow-melting. Its maximum flow is either in August or September and minimum in the period of December and January.

The Godavari : As its hydrograph shows that the flow pattern of Godavari river has also seasonal effects. Its flow is low until May. It has two inaximas-one in May-June and other in July-August. After August, its flow pattern falls sharply but it has higher flow in October and November also.

The Narmada : The hydrograph shows that the flow pattern of Narmada is also seasonal. It is high in the. months of June to September and October during the rainy season. During winter it is low.

The Jhelum : The flow pattern of Jhelum is high throughout the year, because it is due to snow melting and rainfall in the region.