What is the largest river in Europe in terms of length, discharge, and watershed, that flows through central Russia, and has some of the largest reservoirs in the world?
Volga River Volga River The Volga (; ) is the longest river in Europe. It is also Europe's largest river in terms of discharge and drainage basin. The river flows through central Russia and into the Caspian Sea, and is widely regarded as the national river of Russia. Eleven of the twenty largest cities of Russia, including the capital, Moscow, are located in the Volga's drainage basin. Some of the largest reservoirs in the world are located along the Volga. The river has a symbolic meaning in Russian culture and is often referred to as Волга-матушка "Volga-Matushka" (Mother Volga) in Russian literature
Nutrient cycling in the Columbia River Basin River estuary exports high rates of nutrients into the Pacific Ocean; with the exception of nitrogen, which is delivered into the estuary by ocean upwelling sources. The Columbia River basin is a major watershed and the largest river in the Pacific Northwest region of North America. Extending from southern British Columbia to northern Nevada, the watershed includes seven American states and two Canadian provinces and drains an area of about 260,000 square miles. The Columbia River stretches 1,620 miles in length until its discharge into the Pacific Ocean near Astoria, Oregon. The average annual discharge rate of the Columbia River