TAGS: the longest rivers in the world, rivers, the longest rivers, water, surface water, water flows, natural resources, flow river directions, major rivers in the world, major rivers on the planet, the world's longest rivers, top 10 longest rivers in the world, streams, currents of water, flooded areas, floods, large rivers, the largest rivers, the Amur river, about the Amur river, flora and fauna of the Amur river, description of the Amur river, geographical position of the Amur river, tributaries of the Amur river, the Amur river-holiday destination, cruises on the Amur river