ELEVATIONS IN CENTRAL CANADA. 



255 



Elevatio7is along the Pemhina Valley {^Outlet of Lake Souris). 



Locality 



O O 



% '^ ^ 



.CO ^02 



P 



CS =5 > 1^ 

 § > ^ 



IS ^3 



^ 



si 

 O bo 



Elbow of the Souris, in a valley that has been eroded 

 about 100 feet by the present river flowing to the j 

 Assiniboine, since the glacial Lake Souris ceased 



to outflow to the Pembina by Lang's valley ' 



Divide in Lang's valley, near the line between sec- 

 tions 31 and 32, T. 5, R. 17, Manitoba, separating 

 Lang's creek flowing west to the Souris and Dun- ; 

 lop's creek flowing east to the Pembina, determined : 



by railway survey j 4 



Bone lake, three miles long and a half mile wide 5- 8 



Grass lake 10-11 



Pelican lake, ten miles long and about a mile wide, 

 mostly 10 to 15 feet deep, but m its deepest por- 

 tions about 20 feet, rising three feet between its 



lowest and highest stages 11-21 



Junction of outlet of Pelican lake with the Pembina.. _| 22J 

 Lake Lome, area about one mile square, maximum ' 



depth about 8 feet 23-24 



Lake Louise, of nearlv the same area and maximum 



depth 1 25-26 



Mouth of Badger creek _. 27 



Kock lake, eight miles long and one half to one mile ! 



wide, maximum depth, 10 feet* 30-38 



Mouth of Clearwater river 40 



At the Marringhurst bridge, on the north line of sec- 

 tion 16, T. 3, Pv. 12, Manitoba 42 



Swan lake, five miles long and one mile wide, maxi- 

 mum depth probably aljout 10 feet 50-55 



At La Riviere, determined by railway survey 67 



At crossing of the Boundary Commission roadf 75 



At crossing of the old Missouri trail 80 



At the Mowbrav bridge, on the line between sections 



21 and22, T. 'l, R. 8, Manitoba ' 85 



On the international boundarv j 100 



At the fish trap, section 30, "T. 163, R. 57, North I 

 Dakota, two miles west of the Pembina mountain 

 escarpment and seven miles west of Walhalla 108 



1265 



1364 

 1357 

 1355 



1355 

 1348 



1346 



1345 

 1343 



1335 

 1332 



1330 



1310 

 1287 

 1265 

 1250 



1235 

 1125 



1475 



1475 

 1480 

 1485 



1485-1510 

 1510 



1510 



1510 

 1510 



1510-1550 

 1525 



1480 



1500 

 1550 

 1550 

 1545 



1540 

 1540 



1050 , 1400-1500 



* Glenora prairie, north of Rock lake, a slightly undulating expanse of modified drift, stratified 

 gravel and .«and, extending six miles from west to east and two to three miles wide, has an eleva- 

 tion of 1510 to 1500 feet, descending eastward with the valley. 



t Dr. Dawson notes a wide terrace here, in some places thickly strown with bowlders, on the 

 southwestern side of the river and about 200 feet above it; and he refers its origin to preglacial 

 erosion of the valley. 



