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It is the process of reviving or restoring the natural flow and health of a river that has been damaged due to human activitiessuch as waste dumping, encroachment, and pollution. The process involves removing pollutants, cleaning up riverbeds, and restoring the natural environment around the river.
One example of rejuvenation is the Nile, which was rejuvenated when the Mediterranean Sea dried up in the late Miocene. Its base level dropped from sea level to over 2 miles below sea level. It cut its bed down to several hundred feet below sea level at Aswan and 8000 feet below sea level at Cairo. After the Mediterranean re-flooded, those gorges gradually filled with silt.
Recently, the 7.2 Km Kuttamperoor River in Alappuzha, Kerala has been rejuvenated after over a 6-year effort through public participation and government intervention.
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