THE INFLUENCE OF FLOODS UPON AXLMALS 



157 



between these •t^Yo townships, claiming- a narrow portion of 

 each for its flood plain. The stream itself, when normal, varies 

 from perhaps fifty to a few hundred feet in width and from 

 eighteen inches to a maximum depth of about twelve feet. .\s 



Pig. 16. — Small portion of the region shown in figTjre 15 on a larger scale, 

 showing changes in the course of the stream and the location of the most 

 prominent gravel bars. The separate letters correspond to the letters of 

 certain of the following figures and mark the locations from which the 

 photographs were made. Map by H. M. Tioisler and the author. 



with all streams of this size in this reg'ion, it flows rapidly, has 

 well defined alternating pools and rapids, and has for the most 

 part a gravelly bottom. It is subject to annual freshets and 



