THE ASSINIBOINE DELTxV. 



373 



above the sea, the hitter being its elevation in a Inroad swell near the center 

 of section 24, township 8, rang-e 11. Ten to 20 miles thence westward, 

 between Cypress River and Glenboro, the elevation of the slightlv nndulat- 

 ing snrface of the delta is mostly 1,235 to 1,245 feet, with frequent sloughs 

 and permanent ponds, up to a, quarter of a mile or more in extent, lying at 

 1,225 to 1,235 feet. Tliese ponds abound near Glenboro and for 4 nailes 

 east. Along the Canadian Pacific Railway from Sydney westward, by 

 Melbourne, Carlierry, and Sewell, to Douglas, 20 to 25 miles north of the 

 foregoing, the undulating delta ranges in elevation from 1,230 to 1,275 

 feet; and it holds the same height through 25 miles northward, to within 3 

 miles southeast of Neepawa. Adjoining the undulating and rolling area of 

 till which borders this part of its area on the west, its expanse of gravel 



mo o 



Fig. 16 — Section across the delta of the Assiniboiue Ri' 



Horizontal scale, 15 



and sand slowly rises northward from 1,265 and 1,270 feet 2 to 3 miles 

 northeast of Douglas to 1,275 and 1,280 feet between Willow or Boggy 

 and Spring ci-eeks. These elevations represent the plateai; before men- 

 tioned, which forms the greater part of this delta. 



While the extensive area of this plateau, reaching 50 miles from east 

 to west and neai'ly the same distance from north to south, is thiis so uniform 

 in its elevation that its deposition must l^e attributed to stages of the lake 

 when its level was not much higher, probably those of the Herman beaches 

 h and hh near Treherne and Neepawa, there is a considerable tract lying 

 on liotli sides of the Assiniboine in the vicinity of Brandon and Kemnay 

 upon which delta deposits closely associated with this plateau ascend from 

 a few feet to 125 feet above it in a distance of 12 or 15 miles from east to 



