| Exploring the Ottawa River 
 
 
Champlain set out to explore the Ottawa River. An interpreter, 
Nicolas de Vignau, assured Champlain that he knew the way to "the sea of the 
North" (Hudson Bay).
| | Champlain and his men in 
front of Rideau Falls, 1613 Illustration by Francis Back
 Collection of the Canadian Museum of Civilization
 | 
 |  (1613) Having then but two canoes, I was able to take with me 
only four men, among whom was one named Nicolas de Vignau, the most impudent 
liar that has been seen for a long time . . . 
  Accordingly, our canoes being laden with provisions, with our 
arms, and with goods with which to make presents to the Indians, I set out 
on Monday, May 27, from St. Helen’s island [Montreal] . . . 
  On the 
fourth [of June] we passed near another river [Gatineau River] which comes 
from the north where live tribes called Algonquins . . . 
  Near the 
mouth of this river is another [Rideau River] coming from the south, and at 
its mouth there is a wonderful waterfall . . . 
 | 
  . . . 
Here are many small islands which are nothing more than rough, steep rocks 
. . . At one place the water falls with such force upon a rock that with the 
lapse of time it has hollowed out a wide, deep basin. Herein the water 
whirls around to such an extent, and in the middle sends up such big swirls, 
that the Indians call it Asticou, which means "boiler." This waterfall makes 
such a noise in this basin that it can be heard for more than two leagues 
away. The Indians who pass by this spot perform a ceremony . . . Champlain, The Voyages, 1613
 
 
 |  |  | Champlain’s 
journey west of the Ottawa River, 1613, 1615 Click in outlined area for a 
detailed view
 | 
 
During his expedition, he identified the mouth of the Gatineau River 
and Rideau Falls. When he arrived near the site where the Canadian Museum of 
Civilization now stands, he was forced to portage to avoid the 
Chaudière Falls.
 
According to Champlain, at that point, the water raged over the 
rocks, digging a wide, deep basin. The Amerindians called the place Asticou, 
meaning boiler, and before bypassing it, they made an offering of atonement.
 
Once past the obstacle, Champlain calculated the position of the site 
using his astrolabe. The position he recorded in his journal was 
45°38', but the Chaudière Falls are at 45°25'33". With his 
small mariner's astrolabe, he could only estimate the position, with an 
error of 15'.
 
To avoid the rapids at Gould's Landing, Champlain chose a course 
through a number of small lakes near Cobden, Ontario, but this route was not 
an easy one. He and his men were forced to portage over fallen logs at one 
particularly difficult point by Green Lake, now known as Astrolabe Lake. 
According to some late nineteenth-century authors, it was here that 
Champlain lost his astrolabe.
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