survey. The discharge is largely controlled by the Deadwood Dam, and 

 ranges from less than 50 c.f ,s, irtien water is being impoiinded to more 

 than 2,000 c,f.s, d\iring Uie period of majdmum irrigation use in the 

 lower Payette Valley, Nine miles above the mouth a steep box canyon 

 Was encountered which extended 6 miles and could not be traversed. The 

 gradient is fairly steep in the lower part, but becomes moderate in the 

 5 miles immediately below the dam, irtiere the only good spawning area was 

 found 9 There were 11,000 square yards of suitable spawning area, con- 

 stituting approximately 2 percent of the total bottom in the portions 

 surveyed^ The Deadwood Dam is located about 23 miles above the mouth. 

 It is 120 feet high, and is not equipped with fishwayso The survey 

 was terminated at this pointo There are no records of any salmon runs 

 in the Deadwood or any other tributaries of the South Fork of the 

 Payette above the impassable falls on the latter. The Deadwood River 

 is completely inaccessible, and of no present or potential value to 

 salmon* 



3H-(3)« Clear Creek .— (August 2$-26, 1938; Hanavan and Wilding.) 

 Clear Creek enters the South Fork of the Payette approximately 3U miles 

 above the mouth. The stream is about 20 miles long, of which l5| miles 

 were surveyed. It is of no possible value to salmon above the terminus 

 of the survey because of its small size and steep gradient. Near the 

 mouth the stream was 33 feet wide, discharging about UO c.f .s., and the 

 water temperatiore was 62,0 F. The gradient is steep throughout. There 

 were only U,100 square yards of suitable spawning area, constituting 

 less than 2 percent of the total bottom in the pottion surveyed. Clear 

 Creek is completely inaccessible, and of little potential value to salmon. 



3H-(U). Eighiaiile Creek .— (August 27, 1938; Parkhurst.) iilght- 

 fflile Greek enters the South Fork of the Payette approximately li8 miles 

 above the mouth. The stream is about 10 miles long, of which 2^ miles 

 were surveyed. It is of no possible value to salmon above the terminus 

 of the survey because of the steep gradient. Near the mouth the stream 

 was 20 feet vdde, discharging about 25 c.f.s., and "the water temperature 

 was 1;9.0 F. The gradient is moderate to steep. There were only 1,700 

 square yards of sxii table spawning area, constituting approximately 6 

 percent of the total bottom in the portion surveyed, Sightmile Creek is 

 completely inaccessible, and of little potential value to salmon. 



3H-(5). Tenmile Creek .— (August 27, 1938; Morton.) Tenmile 

 Creek enters the South Fork of the Payette approximately 50 miles above 

 the mouth, ^he stream is about 13 miles long, of which 3 miles were 

 surveyed. It is of no possible value to salmon above the terminus of 

 the survey because of the steep gradient. Near the mouth the stream 

 was 30 feet wide, discharging about 30 c.f.s,, and the water temperature 

 was 5l«0 F. The gradient is steep throughout, and there is practically 

 no suitable spawning area. A dam 2 feet in height is located about 

 2 miles above the mouth, and diverts 5-8 c.f.s, into an unscreened 

 irrigation ditch. Tenmile Creek is completely inaccessible, and of no 

 present or potential value to sauLmon. 



3H-(6), Warm Spring Creek »— (August 27, 1938; Hanavan.) Warm 

 Spring Creek enters the South Fork of the Payette approximately 55 

 miles above tiie mouth. The stream is about 9 miles long, of which 

 2 miles were surveyed. It is of no possible value to salmon above 



