April 30, 1915. 
Canada 
Geological Survey 
Museum Bulletin No. 11. 
GEOLOGICAL SERIES No. 23. 
Physiography of the Beaver dell Map- Area and the Southern Part 
of the Interior Plateaus of British Columbia. 
By Leopold Reimecke. 
INTRODUCTION. 
This bulletin is based on a detailed study of the physiography 
of the Beaverdell map-area in southern British Columbia. 
The Beaverdell area forms part of the Interior plateaus of British 
Columbia, a physiographic unit about 500 miles long by 100 wide 
lying in the central portion of the Canadian Cordillera. A 
comparison of several mapped areas in the southern part of the 
Plateaus with the Beaverdell area proves that they are essentially 
similar to it in their topographic forms and physiographic de- 
velopment. The study of the physiography of the Beaverdell 
area is of value chiefly because this area may be considered to 
typify a much more extensive region. 
Field Work and Location. 
The writer spent the autumn of 1909 and the summer of 
1910 in topographical work in the Beaverdell area, and the sum- 
mer of 1911 in geological work upon the same area. Previous 
seasons had been spent in topographical mapping of a district 
at the headwaters of the Tulameen river and of a much smaller 
area at Hedley on the Similkameen river. All three areas lie 
in the southern part of the Interior plateaus: Beaverdell in the 
