The lands between the mud flats at Brooklyn and the Liberty Reservoir on either side of the Patapsco River, in Anne Arundel, Carroll, Howard, and Baltimore counties, within a distance of 1 mile on either side from the medial line of the river, or either of its branches, having been purchased by the State, shall be held by the State as a State park under the protection and administration of the Department which shall exercise the same power of making rules and regulations and managing the land as any other State park. The territory acquired is subject to all the general laws passed by the legislature not inconsistent with this section.