And while the U.S. and North America continue to witness water levels dropping in crucial rivers, lakes and reservoirs, a mixture of climate change and poor water management policies are causing similar events all over the world, experts told ABC News."Rivers all over the world are running really low," especially the Tigress and Euphrates Rivers in Iraq, as well as significant bodies of water in countries like Italy, Romania, France and China, Jonathan Deason, professor of the Environmental and Energy Management Program at George Washington University.Here are some recent examples of bodies of water drying up in North America: Shipwreck, human remains found in the Mississippi River Decreasing water levels along the Mississippi River, one of the most important trade routes in the country, have been causing ripple effects worldwide.Supply chain delays for goods like grains, cement and fuel, which travel through New Orleans to the Gulf of Mexico, could be a consequence of a dried-up Mississippi, experts say.In addition, if the lake were to dry out, dust storms would be a great concern due to the decades of heavy metals and toxic substances that remain trapped in the sediment, scientists said."