A power dam 8 feet in height located just above the city of Eugene 

 is provided v/ith a fishifsay and is not a barrier to fish. 



The main Willamette River is of value to fish chiefly as a passage- 

 way to the principal tributaries where the best spawning grounds are lo- 

 cated « A few spring chinook salmon may spavm in the main river near the 

 mouth of the McKenzie and in the 10 mile section above o 



25Ac Johnson Creek o— (February 2, 1935; Brown and Christy.) Enters 

 the Vfillamette at Hilwaukie, Oregon, 17 miles above the mouth. It is 

 22 miles long^ the lower 20 miles having been surveyed o The stream was 

 discharging 75 CofoSo It is scarcely more than a badly polluted slough, 

 with large areas of the bottom covered with mud, silt, and debris. Four 

 low dams and several log and brush jams make the creek impassable at low 

 water stages., The stream is practically useless in its present state, 

 although a few spring chinook and steelhead have been reix)rted to enter 

 at high water stages . 



25Bo Clackamas River . — (June 26-29, 1938; Hanavan, Tifilding, and 

 Morton, August 23;, 1940; Parkhurst and Bryant.) Enters the Willamette 

 River about 21 miles above the mouth. The stream is about 80 miles long, 

 of Tfhich the lower 27 miles up to Gazadero Dam v/ere surveyed. The ex- 

 treme discharges of record at Cazadero Dam ranged from a minimum of 410 

 CofoSo, on October 20^ 1925, to a maximum of 60,800 c.foS«, on March 31^ 

 1931. and the average discharge was 2,544 c.foS. The flovir during the 

 fall spawning period ranges from 600 to 1,000 c.f.s. 



River Mill Dam, constructed in 1911, is located 23 miles above the 

 mouth o It is 80 feet high and has partially blocked runs of migratory 

 fish eveif since its construction, as the fish ladder never has been sat- 

 isfactory. A few fish manage to pass over the ladder, but many are un- 

 able to ascend. 



Cazadero Dan, built in 1904, is located 27 miles above the mouth, 

 and is 60 feet high. A fish ladder was provided in 193'^, but only an oc- 

 casional salmon lias been observed to pass over the dam. A few steelhead 

 trout are reported to ascend the ladders at both dams . 



A small remnant of the former run of spring chinook salmon persists 

 in the Clackamas River, there being approximately 500-2,000 fish in the 

 run in recent years. In August 1940, 300 spawners vrere observed just be- 

 low Cazadero Dam, and more than 500 below River Mill Dam. Neither group 

 of fish was able to ascend farther. 



25B~(l)o Ro ck Creek . — 



25B-(2)o Clear Creek.— 



25B-(3). D eep Creek .— These small streams vrere not surveyed. 



25B-(4)o E agle Greek . — (June 25, 1938; Hanavan, Yfilding^ and Morton,) 



35- 



