804 the geographical significance of floods, 



Types of Flood-Channel Contours. 



For the sake of simplicity the order observed in the following 

 channel-contour descriptions will be from smaller to larger. 



Fig. 1. — Basin formed in hard clay during heavy storm; 

 Emmaville, New England. Note the aggradation by decrease of 

 gravitative water-thrust. 



1. Roadside gv Iters. — It must be understood at the outset that 

 the contours here described refer to country tracks which have 



S/f 



Fig.2.— Small basin formed in hard clay at Tenterfield (New England) 

 during heavy storm. Note the decrease of storm-water as shown by partial 

 aggradation of basin. This figure throws much light on cirque and fiord- 

 basin formations, also on drumlin and moraine distribution. 



