ABSTRACT 



The use of cattle blocks of salt is an effective and economical means 

 of reducing high resistivities and improving electrofishing in large and small, 

 high and low, cold and warm streams in the southern Appalachian Mountains . 

 Electrofishing trials were conducted in salted and salt-free sections of high 

 resistivity streams . Using salt improved the effective range of the electrode 

 system . A greater percentage of available fish was taken on initial passes 

 through test sections; larger numbers of fish were taken per section due to 

 the extended effective range of the electrodes; and the fish were more thor- 

 oughly stunned and easier to net. The rate of mortality among trout taken in 

 salted section was less than 1 percent greater than among fish collected in 

 salt-free sections. The high yield of fish obtained provides more accurate 

 population estimates. 



