— 47 — 



cion del Uruguay were the bars of Altos y Bajos , Mon- 

 tana . Banco Grande* and «Roman». 



The dredging works, which have been carried ou1 at the 

 mentioned bars, have given very satisfactory results;the 

 channels have maintained their depth since the first dred- 

 srins was carried out and it has only been necessary to 

 make some local corrections and to clean them occasionally. 



The « Altos y Bajos and -Bunco Grande bars, which 

 completely prevented navigation and where only existed 

 a depth of 11 or 12 feet at Low water, are now crossed 

 by a channel where there is always more than IS feet of 

 water. 



The width of the channel through the < Altos y Bajos» 

 bar is 200 nits., and that through the «Banco Grande* bar 

 150 nits, and of that through the «Montana» bar 100 mis. 



The channel through the first two bars is marked by 

 two towers placed in line on shore and which are lighted 

 during night. 



The part of the river Uruguay, which is least known. 

 is that situated between the River Gualeguaychu and Pal- 

 mira. In this entire section of the river, there exists only 

 a narrow twisted navigable channel, which almost disap- 

 pears in what might be called a lake from 8 to 12 ki- 

 lometers wide. The channel is therefore difficult to navi- 

 gate as well for ocean as for coastwise vessels. 



The channel, though generally deep, is, as already has 

 been mentioned, full of bends and if not marked by bea- 

 cons and buoys difficult to navigate. 



In this entire zone, the channel is enclosed by steep and 

 hard banks or an extensive strand formed by mud, where 

 there is only a depth of one meter. Between those banks 

 the navigation channel passes, which at some places is 

 only 300 mts. wide, but where depths from 50 to • >(> feet 

 are found. 



Navigation of this part of the river is only possible by 

 using continually the sounding lead, as well during day 

 time as at night and is generally interrupted at sunset unless 

 the services of an experienced pilot have been secured. 



Durinu- litis month I September 1903 ) the buoying of 

 the lower Uruguay over a distance of nearly LOO kilome- 



