 Deforestation in the Brahmaputra watershed has resulted in increased siltation levels, flash floods, and soil erosion in critical downstream habitat, such as the Kaziranga National Park in middle Assam.Helicopters were deployed to drop food supplies to nearly 10,000 people in six villages where highway access was cut off by the flooding, about 550 km west of Gauhati, the capital of Assam.In 2013, the Brahmaputra River and its tributaries flooded, triggered by heavy rainfall at the end of June in the neighboring state of Arunachal Pradesh state through Brahmaputra river and its tributaries.