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Rivers are surface water masses that move along the slope of the Earth’s surface under the influence of gravity and follow a defined channel. Rivers that originate from a source and flow into a sea, lake, or another river are active components of the hydrosphere. These systems, formed by surface runoff, play fundamental roles in shaping the land surface and sustaining the water cycle.General CharacteristicsRivers flow either continuously or seasonally. Continuous rivers exhibit a consistent disc

A river is a natural watercourse fed by rainfall, snowmelt, or spring waters; it flows continuously within a defined channel and typically reaches seas, lakes, or other rivers.Key CharacteristicsRivers originate at a point known as the "source." As they flow, they gather smaller tributaries such as streams and brooks, increasing in volume and discharge. Ultimately, they empty into a sea, lake, or other body of water at a point called the "mouth."Parts of a RiverA river consists of three main par