20 — 



Channel of the 

 Boca Chica. 



The Filomena 

 channel. 



Channel of 

 China. 



the 



Bars of Tala and 



of the Calderon 



island. 



owes it name to its narrowness between the « Boca Chica 

 Island and the Southern extremity of the « San Lorenzo » 

 Island. 



This is specially used by the coastwise navigation, and 

 also by the river steamers when the river is high. It is pre- 

 ferred by navigation notwithstanding the danger of colis- 

 sions with river steamers, because it is more protected and 

 shorter than the « Filomena » channel. 



Its minimum depth is 9 feet, which is found a little above 

 the Northern point of the island of the « Boca Chica ». 



The « Filomena » channel owes its name to the vessel 

 « Philomel », whose Commander B. J. Sullivan, of the Bri- 

 tish Navy recognised it for the first time in the years 1845 

 and 46. 



It is the route followed by the vessels of great draught and 

 by the river steamers when river is low. Its smallest depth 

 of 19 feet is found at the entrance of its passage between the 

 island of the « Burro » and of the « Filomena Grande ». 



Both channels join to separate again a little further on, 

 at the point called the « Tres Bocas». 



The one nearest to the Argentine coast continues under 

 the name of creek of the « China » and terminates in the in- 

 terior port of Concepcion del Uruguay. 



There are two bars which difficult navigation of vessels 

 of 9 feet draught in the channel of the « China », these are 

 the bar of « Tala » and that of the « Calderon » island, the 

 hitter being situated in the very port of Concepcion del 

 Uruguay. The bed is formed of mud and the depth at the 

 first named bar is 5 and the second 3 '/ 2 feet at the zero of 

 the gauges at those places. 



As the river steamers and coastwise vessels could take 

 this route when entering or leaving by the access channel 

 to the interior port of Concepcion del Uruguay, dischar- 

 ging or taking their cargo there, it would be convenient to 

 deepen the last named bars as well as the channel of the 

 Chinas* ( which actually has only a depth of 8 feel ) to 

 'Meet, which besides other advantages, would benefit the 

 port of Capalen, Campichuelo and Piedritas, which are utili- 

 sed by colonies and important cattle ranches of the neigh- 

 bourhood. 



