(70 ILCS 1815/6.6)
(from Ch. 19, par. 806.6)
To issue permits: for the construction of all wharves, piers, dolphins,
booms, weirs, breakwaters, bulkheads, jetties, bridges or other structures
of any kind, over, under, in, or within 40 feet of any navigable waters
within the Port District; for the deposit of rock, earth, sand or other
material, or any matter of any kind or description in such waters.
(Source: P.A. 77-1799