30 feet high .located at the nouth creates a liirnber mill log pond. 

 The dam is provided with a poor fish ladder, which was impassable at 

 the time of obser-vation. The stream is of little possible value to 

 salmon. 



25S-(3)f . Middle (Fork) Santiam River . — (September lS-21, 1937; 

 Baltzo and Kolloen. July 10-13, 1930; Parkhurst and Wilding.) Enters 

 the South Santiam approximately 42 miles above the mouth. The stream 

 is about 30 miles long, of which the lower 19 miles vfere surveyed. The 

 flow ranged from a minimum of 54- c.f .s., on December 1, 193^, to a maxi- 

 mum of 33,500 c.f.s., on i^ecember 31, 1942, from records of the UoS.G.S. 

 taken at a station about 7 miles above the mouth. The water tempei-atui'e 

 in September 1937 was 58°-62° F. 



The only obstruction to the passage of fish is the rack of the 

 Oregon State salmon hatchery located about 2|- miles upstream. The rack 

 is installed in May and removed in October. AH chinook salmon ascend- 

 ing the stream are taken at this point for artificial propagation ex- 

 cept for a few that ascend at higher water before the rack is installed. 



The stream gradient is moderate to fairly steep, 50-100 feet per 

 mile. There are numerous good spawning areas and resting pools well 

 distributed throughout the course. There is spavming area for at least 

 15^,000 salmon in tne stream. None of the tributaries except Quartzville 

 Creek are of significant value to salmon because of their steep gradients. 

 In September, 1"^37, 24 spring chinook spawners were counted below the 

 racks, 250 were being held between the racks, and 40 were counted on 

 spawning riffles above. A fair run of steelhead trout ascends during 

 spring high water, before the racks are installed, 



25S-(3)f-iv. Quartzville Creek .— (September 18-22, 1937; Baltzo 

 and Kolloen. July 13, 1938; Parkhurst and V/ilding.) Enters the Mid- 

 dleSantiam approximately 72 miles above the mouth. The stream is about 

 26 miles long, of which the lower 16 miles were surveyed up to an im- 

 passable 20 foot falls. In September 1937 the discharge was 35 c,f,s., 

 and the water temperature was 67° F. The stream course extends thro'ogh 

 a canyon in a heavily forested, mountainous area. The gradient is 

 moderate in the lower 4 miles and becomes fairly steep upstream. Be- 

 tween 92 miles and 132 niiles upstream there are ti-iree falls, 10, 72, s.nd 

 6 feet high that are impassable at low water. Another low water barrier 

 is formed by a lava sink area 13 miles upstream where the channel is 

 nearly/ dry in summer. A 4- foot falls a short distance above is also a 

 low water barrier, and no salmon were seen above this point. There is 

 spawning area available for at least 3,000 salmon. There were 115 

 spring chinooks observed spavming in September 1937, these fish apparent- 

 ly having passed the hatchery rack site on the Middle Fork before the 

 racks were installed. The tributaries are small and steep, and are con- 

 sidered to be of little value to salmon. Yellowstone , Boulder , and 

 Canal Creeks , discharging 5-8 c.f.s., may be of some slight value, 

 particularly for steelhead and resident trout. 



56 



