A new Gallup poll shows Japan's nuclear disaster has done little to sway Americans about the safety of nuclear power. 

"It may be months or years before the final impact of the Japanese disaster on American attitudes toward nuclear power can be assessed," Gallup officials said.

The pollster group added its most recent survey "suggests that support for nuclear power may be more stable than some might think."

The March 25-27 survey of 1,027 American adults found that 58 percent believe U.S. nuclear power plants are safe.

However, many say it's too dangerous to build new nuclear facilities. Researchers found that 48 percent of those surveyed thought the risks are too great to justify building new plants.

Currently, the U.S. is home to 65 nuclear power plants that generate 20 percent of the nation's electricity.