3 YR = Yellowstone River 



TR = Tongue River 



MR = Missouri River 



b + designates upstream movement and - downstream. 



^ These fishes moved downstream 1.5 km in the Tongue River before reaching 

 the Yellowstone. 



This fish moved downstream 0.5 km in the Tongue River before reaching 

 the Yellowstone. 



Indicator species selected by Bovee (1974) for passage and spawning 

 flows were paddlefish (larger rivers) and sauger (smaller streams). However, 

 for the Tongue River, shovelnose sturgeon were substituted for paddlefish 

 because of greater abundance. Channel catfish were added because they 

 migrate and spawn later in the season. 



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