Explanation: West Bengal, a state in eastern India, is renowned for its extensive river network, which includes major rivers such as the Ganges, Brahmaputra, and Hooghly. These rivers not only form a significant part of the state's geography but also play a crucial role in its economy and transportation system. The navigable length of rivers in West Bengal is the longest among the Indian states, as per the data from 2012-13.
The Ganges, one of the most important rivers in India, flows through West Bengal and is a major navigable waterway. The Hooghly, a distributary of the Ganges, is another significant river that provides extensive navigable routes. The Brahmaputra, although primarily flowing through Assam, also has a navigable stretch in West Bengal. These rivers, along with several smaller tributaries and distributaries, form a vast network of navigable waterways that are used for transportation, fishing, and other economic activities.
The navigable length of a river is determined by several factors, including the river's width, depth, and the presence of obstacles such as rapids, sandbars, and bridges. West Bengal's rivers are generally wide and deep, with fewer natural and man-made obstacles, making them highly navigable. This navigability is further enhanced by the state's efforts in maintaining and improving the river infrastructure, including dredging and the construction of river ports.
In contrast, other states like Assam, Bihar, and Tamil Nadu have significant river systems but do not match the navigable length of West Bengal's rivers. Assam's Brahmaputra, while a major river, is prone to flooding and sedimentation, which can affect navigability. Bihar's rivers, including the Ganges, are also important but are less navigable due to seasonal variations and sedimentation. Tamil Nadu, with its shorter rivers and coastal focus, does not have the extensive navigable river network that West Bengal possesses.
Understanding the navigable length of rivers is important for assessing the potential for water-based transportation and economic activities. West Bengal's extensive navigable river network is a key factor in its economic development and plays a significant role in the state's transportation infrastructure. This knowledge is crucial for students preparing for competitive examinations that focus on the geography and economic aspects of Indian states, particularly West Bengal.