A TYPE OF LAKE FORMATION IN CANADA 



253 



all lakes where water has collected in irregularities of the drift. 

 These are especially numerous near the summits of passes 

 where the nearly level surface has not permitted the streams to 

 cut down and drain the basins. This class of lakes shows no 



OUTLINE MAP 



OF 



LAKE LOUISE 



WITH 25 FOOT CONTOURS BASED 



ON RESULTS OF 137 SOUNDINGS.. 



FROM A SURVEY BY 



W.U.Wilcox 



Fig. 2. 



regularity of form or location. Their basins are usually shallow, 

 and they frequently have neither inlet nor outlet. 



2. Lakes dammed by terminal moraines. Only two of these 

 were found distant from existing glaciers. Each was about a 

 mile long and the dam of one was two miles from the end of 

 a large glacier and that of the other about four miles. 



3. Rock basin lakes. Only two of these were observed, one 

 of which was a typical cirque lake. Man) 7 rock basin lakes, 

 however, in this region are partially dammed by drift desposits, 

 or are otherwise of complex origin. 



