(3) Level of the Water in Floods 



The causes and effects of discoloration 

 of a river are approximately easy to trace. 

 The results of a high or low level of the 

 water are equally recognised, but are more 

 difficult to explain. Certain conditions 

 are admitted as corresponding on a par- 

 ticular river with good or bad sport. 

 These vary, however, in different locali- 

 ties, and as the two are closely associated, 

 it is not always easy to discuss them apart 

 from the colour of the water. All that 

 can here be offered is an indication of 

 general principles. 



Rising water Sir John Edwards-Moss and Colonel 

 saimoii Caldwell have already been quoted in the 

 present chapter to the effect that a rise in 

 the water may be bad for salmon, and Sir 

 James Fergusson, on the other hand, as 

 having had experience of good sport under 

 such conditions. Sir Henry Pottinger 

 writes thus on the subject of salmon in 

 rising water : 



" My experience teaches me that 



