Rivers are commonly classified based on their origin into Himalayan rivers, Peninsular rivers, and inland rivers. Himalayan rivers originate from glaciers and snow-covered mountains, making them perennial with water flow throughout the year. Peninsular rivers usually arise from plateaus and depend largely on rainfall, so many are seasonal. Inland rivers do not reach the sea and instead flow into lakes or dry up inland. Each type shows distinct characteristics in length, volume, and drainage pattern. This classification helps geographers understand regional water availability and the impact of climate on river behavior.