Lake Texoma is in the USA. It is between Texas and Oklahoma. It is a man-made lake. It controls floods and makes electricity.
Something interesting happens on the lake. Something forms a vortex. The vortex is around 2.4 meters across. It is not dangerous to big boats.
Somebody films the vortex. It looks cool. The vortex makes the lake drain like a bathtub!
Difficult words: flood (big water), vortex (water which quickly moves in a circle), drain (to make water run out).
