Explanations:In geography, the direction of river flow is an important characteristic that helps in understanding the topography and hydrology of a region. Rivers in Karnataka, like in many other regions, can flow in various directions depending on the landscape and the source of the river. The Tunga River, which is the correct answer, is a significant river in Karnataka that flows eastward.
The Tunga River originates in the Western Ghats and flows through the districts of Kodagu and Hassan before joining the Bhadra River. The eastward flow of the Tunga River is a result of the topography of the region, where the Western Ghats form a natural barrier that influences the direction of water flow. The river's course is shaped by the gradient of the land, which slopes towards the east, allowing the river to flow in that direction.
Understanding the flow direction of rivers is crucial for several reasons. It helps in identifying the drainage patterns of a region, which is important for water resource management, flood control, and agricultural planning. Additionally, the direction of river flow can provide insights into the geological and climatic conditions of the area. For instance, rivers that flow eastward in Karnataka often indicate a slope towards the eastern plains, which can be useful for understanding the broader geographical context of the region.
Other rivers in Karnataka, such as the Gurupura, Aghanashini, and Varahi, have different flow directions. The Gurupura River, for example, flows in a different direction, likely influenced by the local topography. The Aghanashini River flows westward, which is typical of rivers originating in the Western Ghats and flowing towards the Arabian Sea. The Varahi River flows southward, indicating a different drainage pattern influenced by the local landscape.
Thus, the Tunga River is correctly identified as an east-flowing river in Karnataka, reflecting the geographical and hydrological characteristics of the region. Understanding these river systems is essential for students of geography and those preparing for competitive examinations that cover regional geography.