King kavera performed tapasya because he wished to help people. Pleased
with him, Shiva appeared and blessed him with a daughter who would
fulfil his wish. He named her Kaveri and married her to Sage Agastya. A
demon, named Shoorapadma, wanted to trouble people so he prevented rain
from reaching the earth. Kaveri prayed to the gods to help the people.
One day, Sage Agastya went to a lake for a bath. Since he could not
leave Kaveri alone in the ashram, he turned her into water and put her
in his kamandala, the utensil
for carrying holy water. As he entered the lake, he left the kamandala
on the bank. Meanwhile, Ganesha took the form of a crow and overturned
the kamadala. The water was released and Kaveri became a river. She
helped the suffering people by providing them with water.