The strean gradient is fairly steep, Ydtli nuraerous lov/ falls 

 and cascades. A falls 10 feet high located 2^- miles above the 

 mouth \vas considered a barrier to the upstream mssage of fish. 



None of the six tributaries observed were considered lar£;e 

 enough to warrant a detailed survey. A few cutthroat trout were 

 the only fis!i seen or reported, 



25FF-(5). Black Butte Creek .— (June 17, 1933; Ilanavan.) En- 

 ters the Coast Fork aporoximately 30 miles above the mouth. The 

 stream is about 6 railes long, and was surveyed f'-.^r only AGO ^'ards 

 up to an old impassable 8-foot high mill dan. A falls about 6 feet 

 high is located only 85 yards above the nouth, and is passable viritli 

 difficulty. The discharge was about 15 c.f .s., but is much smaller 

 in late summer. The stream bed was silted, and there was some pol- 

 lution from a mercury mine. The stream v;as of no possible value to 

 migratory fisli. 



Pj\RT III 

 ABOVii; BDinm'mASZ DAjI (to but not including the Deschutes River) 



Introduction 



The Sub-area above Bonneville Dam includes portions of the 

 ColuTiibia Gorge and the east Cascade Ifcuntain slope. In the foot- 

 hill section the banks of the Golurabia Hiver slope gradually to the 

 high hills and plateaus. There is little precipitation in this sec- 

 tion except during the winter nionths . iio-'.rever, there are a nuiaber 

 of small partially spring-fed streams rising in the hills tliat former- 

 ly had sustained flo-v;s, and that were reixirted to have formerly sui>- 

 ported small runs of salmon and steelhead trout. At the present tirae 

 the flows of nearly all of these streams are diverted for irrigation. 

 Unless provision should b-e made for the release of small but sustained 

 flov;s below the diversions these streams will continue to be of little 

 value to salraon. 



List of Streams 



Page 



3A. Eagle Creek 96 



35 . Ruckel Creek .96 



36 . Herman Greek 96 



■ii- A. Jilast Fork. 



37. Gorton Greek » 9S 



38. Lindsey Creek 96 



39 . Vifarren Creek . . . o ,96 



AG . Starvation Creek o . .... 96 



■if Streams too small or too steep to Trarrant survey. 



94 



