46 



CHAPJCUY BAR. 



PERUCHOVERNE 



BAR. 



After the dredging- of the San Francisco Bar had been fini- 

 shed, that of the Chapicuy bar was undertaken with the ob- 

 ject to establish there the same condition of navigability 

 as at The other bars where there is 5 feet of depth at ex- 

 traordinary low river, whereas at the Chapicuy bar there 

 was only 2 l / 2 f eet - 



In consequence of the hard material found in the bed 

 of the river, and as there was no plant at hand to deal it, 

 the channel was lined out in a curve following a natural 

 depression in the riverbed. 



The result of the dredging has been that at present ves- 

 sels of 4 '/ 2 feet draught can cross the bar, however low the 

 river may be. 



This bar, which is the second of the many met in the 

 Middle Uruguay where there is less than 9 feet of depth, is 

 actually being dredged. 



The material at first extracted by the dredgers was very 

 hard and consisted of conglomerate of gravel, but his con- 

 glomerate was only found over a short distance. The ma- 

 terial dredged afterwards is fine sand and gravel. 



LOWER URUGUAY 



I during the year 1902, the studies and surveys of the River 

 Uruguay have been extended South of the town of Concep- 

 tion del Uruguay and therefore embrace that part of the 

 river which is called Lower Uruguay. 



Theriver, which between Concordia and Conception del 

 Uruguay is formed by one single navigable channel- with 

 exception of a few unimportant arms and islands— has a 

 width varying from SOU to 1500 mts. and divides itself 

 below the lasl named town into two arms— one which can 

 be used by vessels of great draughi and the other by the 

 river or coastwise navigation- which form a greal number 

 of small and Large islands, the distance of the shore of the 

 main Land varyingfrom lOto 12 kilometers. 



The only obstacles for the ocean navigation, which always 

 follows the main arm of the river, to go as far as Concep- 



