The main purpose of this legislation is to enhance the role of the Chesapeake Bay Program Office in managing and advising on watershed programs in Maryland and potentially other states. The goal is to improve coordination and support for environmental projects that affect the Chesapeake Bay watershed, which is crucial for the health of the ecosystem and the communities that rely on it. Key provisions of the legislation include granting the Chesapeake Bay Program Office the authority to act as an advisory member of the State Management Team for the Maryland Whole Watershed Program.