It is the duty of the Board of Commissioners to maintain the inlet between the waters of the Atlantic Ocean and the waters of the Indian River Lagoon, situated between Brevard and Indian River Counties. The opening and maintenance of such inlet or waterway is declared to be for public purposes necessary for the use of shipping, transportation and commerce, for the health, convenience, comfort and welfare of the inhabitants of the Inlet District.

The Commission of the Sebastian Inlet District, in coordination with the State of Florida, authorizes programs and projects for beach renourishment, erosion control, environmental protection, navigation, boating, recreation and public safety.