is moderate in the lower part of the stream, where excellent spawning 

 area is foimd. There were 38,000 square yards of suitable spawning 

 area, constituting approximately i;7 percent of the total bottom in 

 the portion surveyedo An irrigation diversion dam located 2 miles 

 above the mouth was not a barrier to fish« The unscreened ditch was 

 estimated to carry 3-5 c,foSo Several beaver dams found about h 

 miles above the mouth were considered to be barriers at low water. The 

 West Fork has a small run of chinook salmon, and covild support a larger 

 run, 



lC-(3)« Loon 3reek , — (June 20-30, 19Ul; Frey and Bryant,) Loon 

 Creek enters the Middle Fork approximately U5§ miles above the mouth • 

 The stream is about 3U miles long, of which the lower 26 miles were 

 surveyed. Numerous beaver dams, the decreased volume of flow, and the 

 steep gradient together rendered the stream of no value to salmon above 

 the terminus of the survey. At the mouth it was 5U ft, wide, discharging 

 about $50 c«f«s«, and the water temperature was 5l«0°F, The gradient 

 is steep except for a section of moderate gradient extending 6§ miles, 

 which contains most of the spawning area. There were $8,000 square 

 yards of suitable spawning area, constituting approximately 8 percent of 

 the total bottom in the portion surveyed, A small, unscreened irrigation 

 ditch having a carrjdng capacity of about 3 c,f.So was observed about 

 10 miles above the mouth* Loon Creek has a small run of chinook salmon, 

 and could support a larger run, 



lC-(3)a. Rock Creek . — (June 26, 19ijlj Frey.) Rock Creek enters 

 Loon Creek approximately 12 miles above the mouth. The stream is about 

 7 miles long, of which only the lower UOO yards were surveyed. Near the 

 mouth it was 9 ft, wide and discharging about l5 c,f ,s. The gradient 

 is so steep that the stream was considered to be of no value to salmon, 



lC-(3)b. Warm Spring Creek . — (June 23-26, I9UI; Frey and Bryant.) 

 Wann Spring Creek enters Loon Creek approximately ih miles above the 

 mouth. The stream is about 1? miles long, of which the lower 11^ miles 

 were surveyed. Beaver dams at the terminus of the survey were found to 

 be so numerous and difficult to ascend that they were considered as 

 barriers to sa]jiion. Near the mouth the stream was about 30 ft, wide, 

 discharging about 1$0 c,f .s., and the water temperature was l^S.O^F. 

 The gradient is fairly steep except for a section of moderate gradient 

 extending 3^ miles, irfiich contains most of the spawning area. There 

 were 2$, 000 square yards of suitable spawning area, constituting approxi- 

 mately 15 percent of the total bottom in the portion surveyed. The 

 stream is seldom frequented, and fish suffer practically no molestation 

 by man. Warm Spring Creek has a small run of chinook salmon and a 

 spring run of steelhead trout. It is capable of supporting a larger 

 salmon run. 



lC-(3)b-i, Trapper Creek , — (June 2$, 19Ulj Frey and Bryant.) 

 Trapper Creek enters Warm Spring Creek approximately 10 miles above the 

 mouth. The stream is about 7 miles long, of which the lower 1^ miles 



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