Massachusetts participates in numerous regional agreements, including the New England Interstate Corrections, Police, Board of Higher Education, Radiological Health Protection, and Interstate Water Pollution Control compacts. The state is also a party to the Atlantic States Marine Fisheries Commission, the Northeastern Forest Fire Protection Compact, the Connecticut River Valley Flood Control Compact, the Bay State-Ocean State Compact with Rhode Island, the Merrimack River Basin Flood Control Compact, the Thames River Flood Control Compact, and the Connecticut River Atlantic Salmon Compact.
Border agreements include the Connecticut-Massachusetts Boundary Compact (ratified by Massachusetts in 1908), the Massachusetts-New York Compact of 1853, and the Massachusetts-Rhode Island Compact of 1859. During 2001, the state received over $9.7 billion in federal grants.