Reauthorizes and updates federal authority for programs that monitor, assess, and research the Great Lakes Basin by amending the existing statutory text. The change replaces the current language in the cited provision but the posted material does not include the new statutory text, dollar amounts, or effective dates, so the precise funding levels and timeline are not available.

The law as amended would continue or renew federal support for Great Lakes monitoring and science activities carried out by federal agencies, states, tribes, universities, and other partners, but any new projects or grant awards still depend on appropriations and implementing guidance that are not shown in the provided text.