It is formed by the confluence of the North and South Forks 8 miles 

 above the mouth. Wiriberry Creek extends through a steep, 1/2 -mile 

 wide valley, draining a mountainous watershed covered with dense fir 

 forests. The stream had an average width of about 50 feet^ was dis- 

 charging 115 c.f.s., and the water temperature was 55° F, The gradient 

 is steep^ and there are numerous falls and cascades throughout the 

 course . An 8-foot high falls l^ miles above the mouth is impassable 

 except at high water. Another falls just below the confluence of 

 the North and South Forks spills over a sloping bedrock apron having 

 a total drop of about 30 feet^ and is impassable except possibly at 

 flood stage* 



The extremely high percentage of bedrock^ boulders, and large 

 rubble 5 together with the steep gradient renders most of the stream 

 bed unsuitable for salmon spawning. However, the stream could ac- 

 commodate several hundred spawners, and it was reported that a few 

 spring chinooks enter the stream in September. Cutthroat trout also 

 were reported, and a small number of trout fry were seen. 



The chief tributaries are the North Fork , extending about 6 miles 

 and discharging 40 c.foS., and the South Fork , extending about 9 miles 

 and discharging 60 c.f.s. Since both of these streams enter above im- 

 passable falls they were not surveyed. 



25EE-(2)b-ii North Fork of Big Fall Creek .— (Not surveyed) Enters 

 Big Fall Creek approximately 11 miles above the mouth. The stream is 

 about 6 miles long. Because of its steep gradient and low summer flow 

 the North Fork was considered of little possible value to salmon. It 

 is of some value to resident trout. 



25EE-(2)b-iii Portland Creek .— (May 27, 1938; Hanavan and langton.) 

 Enters Big Fall Creek approximately 172 miles above the mouth. The 

 stream is about 7 miles long, of which the lower l| miles were surveyed 

 up to two impassable 8-foot high falls. It drains a high, hilly area, 

 partly wooded and partly burned over. The stream had an average width 

 of 30 feet and was discharging 43 c.f.s., which is somewhat greater than 

 the mean flow. The water temperature was 57° F. The gradient is steep, 

 and the stream bed is rough, with numerous cascades. Bedrock and large 

 rubble predominate, and spawning areas are small and scattered. Ifeny 

 log and debris jams were found. 



It was estimated that Portland Creek Might accommodate about 200 

 salmon spawners. However^ there urere no reports of a run into the 

 stream. It is of some value to resident trout. 



25EE-(2)b-iv. Hehe Creek .— (Not surveyed) Enters Big Fall Creek 

 approximately 21 miles above the mouth. It is about 6 miles long, and 

 is a typical, turbulent mountain stream having a steep gradient and a 

 stream bed composed mainly of bedrock and boulders, Hehe Creek is of 

 little possible value to salmon^ but is of some value to resident trout. 



