Ahi is a dragon that originated from Buddhism. This dragon is said to have drank all the water in the world then sit atop mountains. Ahi chose to to return the water so the god Indra slays the dragon and all the water returns back to Earth. Now people think that the Ahi is a symbol of drought. People say that the Ahi looks like a huge serpent with the head of a human. It is sometimes associated with Verta. This could be caused by the fact that they both steel women and cows, plus they endanger fertility, and withhold water.
Ahi is mentioned in The Element Encyclopedia of Magical Creatures, on page 11.