Great Lakes Areas of Concern rivers, and oceans causing pollution and buildup of sediment. Nonpoint source pollution is said to be the most problematic and hardest to reverse of the types of pollution because it is so hard to regulate and pinpoint where it originates. Many experts agree that nonpoint source pollution is the biggest concern facing the Great Lakes. With the increase of urbanization, a toll has been taken on the lakes in these areas. Lakes that once had stable ecosystems with the appropriate amount of plant life are now full of massive amounts of plants and algae that have been fed by excess
Rivers and lakes of Armenia Rivers and lakes of Armenia The Rivers and lakes in Armenia are mainly powered by fresh water. Throughout history Armenia has been called Nairi by the Assyrians meaning the "Land of the lakes and rivers". The Armenia is home to many rivers and lakes. The largest river of Armenia is the Arax, which lies on the country's border with Iran and a large part of the border with Turkey. Its major tributaries are the Akhurian, Kasagh, Hrazdan, Azat, Arpa, Vorotan and Voghdji rivers. The largest rivers in north west part of the country are the Debed and Aghstev, while smaller