LAKE SASKATCHEWAN. 



273 



maximum depths of the lakes through which the river flows. Its elevations 

 are referred to sea-level, approximately, by comparison with the Canadian 

 Pacific Railway. 



Elevations alonij the Qu'Appelle VaUey (outlet of Lake Saskatchewan). 



Elbow of the Sonth Saskatchewan. 



Ponds on the River that Tuma 



Height of land 



Sand Hill or Eyebrow Lake 



Buffalo Lake 



Lake 



Fourth Fishing Lake 



Third Fishing Lake 



Second Fishing Lake 



First Fishing Lake 



Crooked Lake 



Konnd Lake 



Month of the Qu'Appelle 



Miles from 

 elbow of the 

 Sonth Sas- 

 katchewan 



13 

 24- 28 

 58- 74 

 83- 84 

 135-144 

 144-149 

 15U-153 

 154-160 

 198-303 

 218-223 



1,619 

 1,686 

 1,704 

 1,685 

 1,635 

 1,624 

 3,504 

 1,503 

 1,501 

 1,500 

 1,389 

 1,364 

 1,264 



Maximum 



depths of 



lakes in 



feet. 



Height of 



blutls in 



feet. 



110-140 

 115-150 



300-350 

 300-320 



The area that was occupied by the glacial Lake Saskatchewan during 

 its stages of outflow through the head stream of the Qu'Appelle, afterwai'd 

 by Long Lake, and perhaps still later by the head stream of the Assini- 

 boine, extends from the base of the morainic Vermilion Hills, on the Mis- 

 souri Coteau, where it is cut through by the South Saskatchewan, some 25 

 miles above its elbow, to the eastern part of the Pasquia Hills, south of the 

 Cumberland House. At length the glacial recession opened the Lower 

 Saskatchewan Valley, and this lake fell to the level of Lake Agassiz, which 

 appears to have reached up the Saskatchewan to the vicinity of Prince 

 Albert, about 40 miles above the confluence of its north and south branches. 

 Before the ice dam between Lakes Saskatchewan and Agassiz was removed, 

 the former lake, as here described, had covered an area approximately 300 

 miles long- and 25 to 75 miles wide. 



It is to be added, however, that before the Saskatchewan Lake was 

 permitted by the glacial retreat to fill a part of the basin so far east as to 

 outflow into the Qu'Appelle, various bodies of water, dammed by the ice- 

 sheet, had existed in its upper portions, flowing southward, as noted in the 

 early part of this chapter, by Lake Pakowki and other courses. If we 

 MON XXV 18 



