Creates a federal New York–New Jersey Watershed Restoration Program and a competitive grant and technical-assistance program to fund restoration, protection, monitoring, planning, and related activities across the New York–New Jersey watershed. The law authorizes up to $20,000,000 per year for FY2026–FY2031 (with up to 5% for administration and at least 75% for grants and technical assistance), requires prioritizing communities experiencing environmental injustice, and directs the Secretary to set up the program within 180 days and consult Federal, State, Tribal, and regional partners.

The Act requires annual implementation reports to Congress (first due within 180 days), sets cost‑share rules that can favor small, rural, and disadvantaged communities, restricts the federal government from holding purchased lands long term (except to rapidly transfer them to listed recipients), and expires on October 1, 2031.