Lake in mountain areas with very clear, cold, nutrient-poor waters. Most of the water in a mountain lake is rainwater and meltwater from glaciers. The temperature in the mountain lakes are rarely over 10 degrees even in the surface waters in summer. The visibility in the mountain lakes are often very good, with a Swedish record in Rissajaure (near Abisko), with visibility of 37 meters.
Global Water Shortage Pt.1 / BBC World News America
A Billion people don’t have access to sufficient water and with water use growing at twice the rate of the population, water will surpass oil as the most desired and needed liquid. BBC sent 4 correspondents around the world to investigate. Then Matt Frei talkes with Jeffrey Sachs of Columbia University.