The singer will soon be on the air with a public service announcement urging people in the state to conserve water.
It's all part of a deal she made with the state to use Hearst Castle for a music video.
Gaga also wanted to use the famous Neptune pool, but it was emptied in January because it was leaking 5,000 gallons of water a day.
Lady Gaga agreed to pay for water to be pumped into the pool and then returned to an irrigation facility after the video shoot.
Part of the $250,000 she's donating to the Hearst Castle Foundation for the shoot will be used to repair the pool.