3C, Squaw Creek . — (Not svirveyed.) Squaw Creek enters the 

 Payette River approximately U5 miles above the moutho The stream 

 is about U5 miles long. It is of no value to salmon because it 

 enters above Black Canyon Dam, and almost the entire flow is di- 

 verted for irrigation. 



3D. Jerusalem Creek o — (Not suarveyed.) 



3E. Hill Creek o — (Not surveyed.) 



3F. Brownlee Creek . — (Not surveyed.) These are all small, inter- 

 mittent streams entering the Payette River between Squaw Creek and the 

 north fork of the Payette. None of them are of any potential value to 

 salmon, 



3G. North Fork, Payette River .— (August 5-13, 1938; Hanavan, 

 Parkhurst, Wilding, and Morton.) The North Fork enters the Payette 

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

 120 miles long, of which 116 miles were surveyed. The average stream 

 width from the mouth to Payette Lake was more than 180 feet. The 

 discharge at the time of the survey was 573 c.f .s. at a point about 

 iiO miles above the mouth, about 300 c.f.s. at the outlet of Payette 

 Lake, and about 75 c.f.s, at a point U miles above Payette Lake, The 

 water temperature was 69. F. at the mouth, 67.0 F. at the outlet of 

 Payette Lake, and 53.0F. at the upper end of Upper Payette Lake. The 

 gradient is mostly moderate. There is a concentration of good spawn- 

 ing area for a distance of 12 miles downstream from the outlet of 

 Payette Lake, and also in the section between Payette and Upper Payette 

 Lakes. There were 310,000 sq\xare yards of suitable spawning area, 

 constituting approximately h percent of the total bottom in the sur- 

 veyed portion of the stream. 



There is a mill dam at the town of Cascade, about UO miles 

 above ihe mouth. This obstruction is U feet high, has no fish ladder, 

 and is passable only at high water. 



There is a power dam located one mile above the town of 

 Cascade. This obstruction is 7 feet high, has no fish ladder, and 

 is imp»assable to fish. The power diversion is vmscreened, 



A new water control dam was constructed at the outlet of 

 Payette Lake in the fall of 19U3» It was designed to raise the level 

 of the lake about 7 or 8 feet, and probably withstands a head at the 

 dam of about 10 feet. No fishways were provided, and the dam is a 

 barrier to migratory fish. 



There is a water control dam at the outlet of Upper Payette 

 Lake. This obstruction is about 9 feet high, has no fish ladder, and 

 is impassable to fish. 



52 



