It shall not be lawful to fill in with earth, stone or other solid material in the tidewaters of the Delaware River between the points referred to in § 1505 of this title, beyond the bulkhead line or lines of solid filling by §§ 1505-1510 of this title adopted, fixed, established, laid down and exhibited on the map or maps, report or reports, except in the construction of duly authorized piers. No erection or structure of any kind shall hereafter be erected, allowed or maintained beyond or exterior to such bulkhead line or lines of solid filling, except duly authorized piers, which shall not be less than 150 feet distant one from the other, and which shall in no case extend beyond the lines indicated for piers on such map or maps, report or reports.
Structure Delaware Code
Title 23 - Navigation and Waters
Chapter 15. WHARF LINES AND BULKHEADS
§ 1501. Limitation on wharves in City of New Castle.
§ 1502. Laurel River; wharf lines and limitations.
§ 1503. Enforcement of Laurel River restrictions.
§ 1504. Drainage into Laurel River.
§ 1505. Delaware River opposite Wilmington and Edge Moor; bulkhead and pier lines.
§ 1506. Filing federal maps and reports.
§ 1507. Filling in beyond established bulkhead line; structures outside bulkhead line.
§ 1508. Littoral proprietors' rights; deposit of dredgings by United States.
§ 1509. Title of littoral proprietors to lands filled in.
§ 1510. Waterfront of respective proprietors; determination of.
§ 1511. Proprietors' right to own and hold structures on river front; further rights.