Fish-friendly Irrigation 



Fish ladders on diversions: The after photo (right) shows the new diversion and fish ladder in operation during high 

 (spring) flow, which is the spawning migration period for rainbow trout and westslope cutthroat trout. 



Denil Fish Ladders: Before (right) and after (left) of a diversion retrofitted with a Denil fish ladder: Denil fish 

 ladders can retrofitted to old structures or designed into new diversions. This ladder allows the upstream 

 movement of fish over six inches in length. 



