Correction to: Nature https://doi.org/10.1038/s41586-019-1111-9, published online 08 May 2019.

In Supplementary Table 1 of this Article, all free-flowing rivers identified were not included. This has now been corrected, and the original, incorrect version of Supplementary Table 1 is provided as Supplementary Information to this Amendment, for transparency. The original Article has been corrected online.

Supplementary Information is available in the online version of this Amendment.