Seine River Steamers early vessels meant that positive traction by pulling on a chain against a deadman or anchor was much more effective. In the 1830s river travel was considered dangerous, so much so that insurers would put a 25 percent premium on cargoes and vessels travelling the route. The Seine is divided into three sections, the lower or Oise section, middle or Paris Section, and upper or Marne section. Ships enter the river at Le Havre through a bad tidal bore. (Victor Hugo's favourite daughter was killed while travelling in a small boat across the bore.) Oceangoing ships can travel to Rouen,
Mouth of the Aguapeí Private Natural Heritage Reserve Mouth of the Aguapeí Private Natural Heritage Reserve The Mouth of the Aguapeí Private Natural Heritage Reserve () is a private natural heritage reserve in the state of São Paulo, Brazil. It protects an area of marshland known as the "Pantanal of São Paulo" where the Aguapeí River enters the Paraná River. The Mouth of the Aguapeí Private Natural Heritage Reserve (RPPN) is divided between the municipalities of Castilho, São João do Pau d'Alho and Pauliceia in the state of São Paulo. It has an area of . It is located at the mouth of the Aguapeí River on the