of tagging moved upstream. The majority of those captured upstream 

 from the Tongue River moved downstream (Table 4) . Mature fish 

 remained near the mouth of tributaries or migrated upstream in the 

 Yellowstone after spawning in the Tongue and Powder rivers. Sauger 

 which reared upstream from these two tributaries migrated back 

 downstream to enter the Tongue and Powder rivers during the 

 spawning run. The movements of individual fish tagged in the lower 

 Yellowstone River system are recorded on Figures A-1 through A-17. 



A total of 12 sauger were recaptured downstream from Forsyth 

 diversion (Figure 16) . Forty-five (38%) were tagged in the 

 Yellowstone River downstream to Intake; 45 (38%) in or near the 

 Tongue River, 13 (11%) in or near the Powder River, and 13 (11%) 

 downstream from Intake diversion. Almost all (97%) sauger were 

 recaptured after the first of May demonstrating movement to this 

 location after spawning occurred. 



Fourteen sauger, tagged in the Yellowstone River from Forsyth 

 diversion to the mouth of the Yellowstone or tagged in the Tongue 

 and Powder rivers, were recaptured in the Yellowstone River 

 upstream from Forsyth diversion (Figure 17) . This represents 12% 

 of the total number of sauger which were recaptured in the vicinity 

 downstream (within 8 km) from the dam (Figure 16) . Once the 

 diversion is negotiated sauger will travel great distances 

 upstream; one was captured 193 km upstream from Forsyth (river km 

 575) . 



Sauger ceased movement and became sedentary in late summer and 

 fall. Also, fall tagged sauger appeared to return to the same 



41 



