Pollution Threats to Lake Mead, USA36.1N 114.4W
Two large artificial reservoirs can be seen in this image of arid Western USA: Lake Mead (left) and Lake Powell (right). This week, a mysterious brown foam found floating on the surface of Lake Mead, in its northern extension, the Overton Arm. The foam was seen extending about eight miles from near the mouth of the Virgin River to Echo Bay.
Although the Southern Nevada Water Authority is monitoring water quality at two intakes and so far hasn’t found anything problematic, hundreds of dead fish were seen floating in the water near the foam.